{"id":155,"date":"2017-11-14T02:37:52","date_gmt":"2017-11-13T17:37:52","guid":{"rendered":"http:\/\/www.jeico.com\/en\/?page_id=155"},"modified":"2026-02-24T10:28:36","modified_gmt":"2026-02-24T01:28:36","slug":"faq-2","status":"publish","type":"page","link":"https:\/\/www.jeico.com\/en\/faq-2\/","title":{"rendered":"FAQs"},"content":{"rendered":"
Product Inquiry<\/span><\/a><\/div>\n
Purchase inquiry<\/span><\/a><\/div>\n
A\/S Inquiry<\/span><\/a><\/div>\n<\/div><\/div>
Product Inquiry<\/div>
<\/div><\/div><\/a>
[vc_toggle title=”Q. What are JEICO\u2019s (JREMO\u2019s) unique technologies or features?”]Our systems integrate advanced proprietary technologies designed for maximum safety, precision, and operational flexibility:<\/p>\n
    \n
  1. Password-protected PLL technology<\/li>\n
  2. Proportional control functionality<\/li>\n
  3. Built-in emergency horn<\/li>\n
  4. LED indicator circuit (PLL)<\/li>\n
  5. Operation indicator lamp<\/li>\n
  6. Multi-step, inching, acceleration, and toggle features<\/li>\n
  7. Twin mode and cloning capabilities<\/li>\n
  8. TEST\/RUN function (PLL)<\/li>\n
  9. Synchronization of ID codes, frequencies, and functions<\/li>\n
  10. Computer-based system management for next-gen control<\/li>\n<\/ol>\n[\/vc_toggle][vc_toggle title=”Q. What is the technical role of the receiver\u2019s emergency circuit in ensuring system safety?”]On JREMO receivers, terminals 3 and 4 are reserved for the emergency circuit. This circuit is critical in applications like cranes, where it controls the main magnet. If the relay malfunctions and the main circuit isn’t cut despite a stop command, serious accidents could occur. The emergency circuit ensures the main magnet can still be shut off directly from the receiver.<\/p>\n

    The emergency circuit includes a dedicated fuse and relay for external fail-safe protection. For general remote devices (non-crane use), this circuit is not essential for operation.<\/p>\n

    All JEICO products include an external operation lamp linked to the emergency circuit, providing visual confirmation of remote readiness\u2014one of our features that sets us apart.<\/p>\n

    Note: Terminals 3 and 4 must be of the same phase and voltage (same C-phase line).[\/vc_toggle][vc_toggle title=”Q. Does the JREMO 14K support up to 16 programmable functions (excluding E-Stop and Jog)?”]Yes, it is possible.<\/p>\n

    The JREMO 14K has a very special hidden feature called the Synchro Function.<\/p>\n

    When both the Up and Down buttons or the East and West buttons are pressed simultaneously, an interlock is activated, and an additional independent relay contact is added.<\/p>\n

    By assigning two hidden additional buttons using this synchro function, you can combine them with the existing 14 buttons to achieve a total of 16 functions.<\/p>\n

    Typically, the synchro function is very useful when there are not enough buttons, especially for lights or alarms.[\/vc_toggle][vc_toggle title=”Q. Can a single transmitter be configured for independent control of multiple monorail hoists?”]Among JEICO products, the JREMO series remote hand controllers feature a very special function called Group Toggle Interlock.<\/p>\n

    In monorail setups, usually only 4 points are needed, so the remaining buttons can be grouped. These groups are mutually interlocked and granted toggle functions, allowing up to six hoists to be operated individually with a single remote control.<\/p>\n

    This is especially useful in line work where sequential operations are necessary. One person can handle six different tasks on the line \u2014 a truly revolutionary feature.[\/vc_toggle][vc_toggle title=”Q. Is a mechanical or timed delay required when toggling between forward and reverse in self-hold mode?”]Yes, it’s possible and often necessary.<\/p>\n

    In devices like trolleys or winches that need long-distance or prolonged forward (FWD) and reverse (REV) movement, if you switch directly from forward to reverse without stopping, it can stress the equipment and be very dangerous.<\/p>\n

    To prevent this, the system must stop first before allowing the reverse direction. This is achieved by setting the reverse button to act as a stop button when the system is in forward motion \u2014 only after stopping can the reverse button be pressed again to resume operation.<\/p>\n

    JEICO JREMO models support two methods that meet this requirement:<\/p>\n

    Method 1: When forward (FWD) is ON, pressing FWD again or pressing REV will turn it OFF. Then, pressing FWD or REV again will turn it ON.<\/p>\n

    This is a toggle-type control where any press during ON state turns it OFF, and pressing again from OFF turns it ON. This method may or may not require a separate stop button, making it cost-effective.<\/p>\n

    Method 2: When FWD is ON, pressing FWD again keeps it ON. Pressing REV turns it OFF, and only after that, pressing FWD or REV again turns it ON.<\/p>\n

    This method ensures that only the opposite button turns OFF the current state. It can be done with just two buttons without a dedicated stop button, but for increased safety, a separate stop button is recommended.[\/vc_toggle][vc_toggle title=”Q. What is the “Delay Off“ parameter, and in what scenarios is it typically applied?”]This function is very useful for equipment like magnet cranes.<\/p>\n

    For example, if a magnet is ON and carrying a heavy object, an operator may accidentally or carelessly press the OFF button \u2014 the magnet would deactivate instantly, dropping the load. If there\u2019s someone or something under the load, it can result in a catastrophic accident.<\/p>\n

    The Delay Off function prevents this by requiring a deliberate press-and-hold action to turn OFF the system.<\/p>\n

    Additionally, the system must support the Bypass EMS function so that dropping the remote or accidentally pressing the emergency button doesn\u2019t trigger an OFF state.<\/p>\n

    In JEICO\u2019s JREMO products:<\/p>\n

    This feature is a paid option for 6-point models,<\/p>\n

    But a free option for models with 8 or more points (and since most use 8+, it’s practically always free).<\/p>\n

    If you want to use just one button for both ON and Delay OFF, that\u2019s a paid option.<\/p>\n

    You can set the delay time from 0 to 4 seconds, with 1 second as the factory default.<\/p>\n

    For instance, with a 1-second setting, the OFF button must be pressed for at least 1 second for it to deactivate.<\/p>\n

    This delay time can also be configured on-site.[\/vc_toggle][vc_toggle title=”Q. What is the functional necessity of the Bypass EMS (Emergency Stop) feature?”]Bypass EMS stands for Bypass Emergency Stop, which, as the name implies, means bypassing the emergency stop circuit. In other words, the emergency circuit does not activate. At first glance, this might seem unnecessary.<\/p>\n

    However, for lighting systems or magnet cranes, this function becomes absolutely essential.<\/p>\n

    For lighting: During nighttime operations, if the crane needs to be stopped or the battery changed, and the lights also turn off, it can cause significant difficulty \u2014 especially when lighting is solely provided by the crane.<\/p>\n

    For magnet cranes: If the emergency stop is pressed unintentionally, or if the remote battery needs to be replaced while lifting a heavy object, or the remote is dropped and EMS is triggered \u2014 the magnet should never turn OFF in such situations.<\/p>\n

    The system must allow the magnet or lights to remain ON regardless of the EMS state. This is the role of the Bypass EMS feature.<\/p>\n

    All JEICO JREMO products include this as a free option.[\/vc_toggle][vc_toggle title=”Q. How do PLL and Crystal-based frequency management systems differ in performance?”]There are two main frequency generation methods for industrial wireless remote controls:<\/p>\n

    PLL (Phase Locked Loop): This type holds multiple assigned frequencies.<\/p>\n

    CRYSTAL: A 1:1 frequency method that holds only one fixed frequency.<\/p>\n

    Our products \u2014 JREMO series and Remote Hand F25 series \u2014 use the PLL method with multiple assigned frequencies.<\/p>\n

    Other models, such as F21-2S, F21-6C, F24-810, F24-60, which have been converted from domestic to overseas use, utilize the CRYSTAL method.<\/p>\n

    PLL allows frequency changes without hardware replacement, but because it uses a narrow bandwidth, it requires robust correction and stability design to prevent data loss or drift from external factors (like temperature, vibration, or electromagnetic interference). This is where product know-how becomes important.<\/p>\n

    CRYSTAL models, using only one frequency in a wide bandwidth, respond quickly and don’t need extra stability design \u2014 making them more economical. However, changing frequencies requires a physical component replacement.<\/p>\n

    The JREMO series, designed with the latest technology and accumulated expertise, ensures excellent response, stability, and reliability even within narrow bandwidths \u2014 a standout feature compared to competitors.[\/vc_toggle][vc_toggle title=”Q. What are the critical safety and performance requirements for industrial wireless controllers?”]Compliance with industrial safety laws:<\/strong><\/p>\n

    Remote controls for hoists must have a red emergency stop button and a safety key.<\/p>\n

    The real issue lies in how these are implemented.<\/p>\n

    For instance, the emergency stop button must be positioned on the front of the device so that if the remote is dropped, it hits the emergency button first \u2014 preventing accidental operations.<\/p>\n

    If the emergency button is placed on the top or bottom, or surrounded by a casing, it’s harder to press quickly in a real emergency. Worse, if the device is dropped, other buttons might get pressed instead, which can be extremely dangerous.<\/p>\n

    JEICO products are structurally designed from the beginning to ensure the emergency button is always more accessible than any other button, thus enhancing safety \u2014 going beyond simply meeting regulations.<\/p>\n

    This is a unique strength of JEICO, and it’s something that could benefit the whole industry if adopted more widely.<\/p>\n

    Safety key system:<\/strong><\/p>\n

    Different companies use different approaches. JEICO uses both physical and electronic key methods:<\/p>\n

    For standard 6-button models, the electronic key is standard, with the physical key as an option.<\/p>\n

    For 8-button or more models, the physical key is standard, and the electronic key is optional.<\/p>\n

    Additionally, a password input option can be added, so unauthorized users cannot operate the remote \u2014 even accidentally.<\/p>\n

    All settings can be easily adjusted by the operator without any tools, ensuring both security and convenience.[\/vc_toggle][vc_toggle title=”Q. What is the maximum reliable signal range under standard operating conditions?”]Our standard range is approximately 100 meters for safe visibility to the naked eye. Customized shorter or longer distances are available upon request.[\/vc_toggle][vc_toggle title=”Q. What is the warranty period and coverage?”]Yes. We offer a one-year (12-month) warranty from the date of shipment. This covers software issues only; damages caused by user negligence (e.g., water intrusion, drops, physical damage) are not included.[\/vc_toggle][vc_toggle title=”Q. Which industry certifications does the product hold?”]Our products hold KC, KCS, ISO 9001, and ISO 14001 certifications in Korea, as well as CE (Europe), TELEC (Japan), and FCC (USA) for export compliance.[\/vc_toggle][vc_toggle title=”Q. Is the product customizable to specific technical requirements?”]Yes. We offer full customization\u2014from basic functions to advanced firmware features, and even entirely new designs. Please share your specifications with us.[\/vc_toggle][vc_toggle title=”Q. What are the authorized frequency bands for domestic and international operation?”]– Domestic (Korea) use: <\/span><\/strong><\/p>\n

    173 MHz, 424 MHz, 447 MHz<\/span><\/p>\n

    – International export use:\u00a0<\/strong> \u00a0<\/span><\/p>\n

    433 MHz (based on CE regulations \u2013 Europe)\u00a0 \u00a0 <\/span><\/p>\n

    429 MHz (based on TELEC \u2013 Japan)<\/span>[\/vc_toggle][vc_toggle title=”Q. Where is the product\u2019s country of origin and manufacturing site?”]Made in Korea.[\/vc_toggle][vc_toggle title=”Q: Is it difficult to install this remote control and its receiver?”]\n

    Installation is simple and user-friendly.<\/strong> Each relay contact cable is individually accessible from the receiver, allowing for direct connection to the corresponding terminals.<\/p>\n

    A detailed circuit diagram is included with every remote control system for your reference. Following the diagram ensures a smooth setup process. Should you encounter any difficulties, our support team is readily available to provide assistance.<\/p>\n[\/vc_toggle][vc_toggle title=”Q. What are the functional differences between “creep,“ “dual-speed,“ and “two-step“ buttons?”]These buttons enable remote control of speed-adjustment functions for equipment like cranes. Unlike single-action buttons, they allow for two-step activation. \u201cCreep\u201d usually refers to two-step buttons for up\/down movement, while \u201cdual-speed\u201d refers to 4- or 6-button configurations that allow for multi-speed operation.[\/vc_toggle][vc_toggle title=”Q. I require a four-button configuration; is the 4L model the standard solution for this?”]The 4L model is typically designed for ladder trucks. It includes a proportional volume control, allowing for fine-tuned output using volume knobs. For general crane or equipment use, we recommend the 6K model.[\/vc_toggle][vc_toggle title=”Q. What is the designated function of the “A“ button on the 3K model interface?”]It\u2019s an additional A-type relay contact. You can consider it an extra or spare button.[\/vc_toggle]<\/div><\/div><\/div>

    Purchase inquiry<\/div>
    <\/div><\/div><\/a>
    [vc_toggle title=”Q. How can I purchase a remote control?”]Please call JEICO ‘s main line at +82-51-818-7727 and select extension 1 for the Purchasing Team.[\/vc_toggle][vc_toggle title=”Q. Can we get the 100-set price if we order a mix of different products totaling 100 units?”]Sorry, the 100-set price only applies when ordering 100 units of the same product.[\/vc_toggle][vc_toggle title=”Q. I have lost my remote (transmitter). Is it possible to purchase a replacement unit separately?”]Yes, if you provide the serial number printed on the receiver (e.g., S\/N: 100000), the purchasing team can process the order.<\/p>\n

    (Tip: For crane applications, it’s recommended to record the serial number separately due to installation height.)[\/vc_toggle][vc_toggle title=”Q. Is it possible to purchase individual parts for your products as well?”]Yes, parts are available for purchase. Please contact us with the specific parts you need.[\/vc_toggle]<\/div><\/div><\/div>

    A\/S Inquiry<\/div>
    <\/div><\/div><\/a>
    [vc_toggle title=”Q. Do you provide after-sales service, and how can it be requested?”]\n

    Yes, we provide full after-sales support. For any issues during installation or operation, you can contact us or your local representative.<\/p>\n

      \n
    • \n

      Online:<\/strong> Visit our website \u2192 Customer Service \u2192 Online Consultation \u2192 A\/S Inquiry.<\/p>\n<\/li>\n

    • \n

      Offline:<\/strong> Call our headquarters at 051-818-7727<\/strong> and send your device to the A\/S Center: 94-1, Choryang-ro, Dong-gu, Busan<\/strong>.<\/p>\n<\/li>\n<\/ul>\n

      We are committed to ensuring your satisfaction.<\/p>\n[\/vc_toggle][vc_toggle title=”Q. The remote is working, but there\u2019s delay or signal interruption.”]This may be caused by frequency interference with other wireless communication equipment operating on the same or nearby frequencies.<\/p>\n

      It may also occur due to low battery voltage, which reduces transmission power.<\/p>\n

      If neither of the above applies, send the remote for A\/S inspection.[\/vc_toggle][vc_toggle title=”Q. The remote control is not working at all.”]Case 1 [No response, no LED]: Replace batteries with new ones. If the issue persists, submit for A\/S.<\/p>\n

      Case 2 [Red LED blinks when buttons are pressed]: Check if EMS (emergency switch) is activated. If the issue continues, submit for A\/S.<\/p>\n

      Case 3 [Red LED blinks even without button press]: Check for stuck buttons or debris. If the issue persists after cleaning, submit for A\/S.<\/p>\n

      Case 4 [Green LED blinks but no operation]: Check receiver power. If no response, submit both transmitter and receiver for A\/S.[\/vc_toggle][vc_toggle title=”Q. Water has entered the remote control.”]Remove the batteries immediately and allow the device to fully dry before attempting use. (If the remote still doesn\u2019t operate, send it in for A\/S.)[\/vc_toggle][vc_toggle title=”Q. I want to make a spare remote from an existing one.”]Without a remote copier, on-site duplication is not possible. Please, send the serial number of the required remote control (written note or photo) to the A\/S team, and our team will provide the necessary support.[\/vc_toggle][vc_toggle title=”Q. My remote control is broken. How can I request after-sales service (A\/S)?”]Send the unit to: JEICO A\/S Team, 94-1 Choryang-ro, Dong-gu, Busan<\/p>\n

      (Please include your business card or contact information. Without it, we may not be able to follow up.)[\/vc_toggle][vc_toggle title=”Q. Do you have local distributors?”]Yes. You can check for distributors and service centers on the JEICO website: Customer Service > Distributors & Service Centers.[\/vc_toggle]<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"Product Inquiry Purchase inquiry A\/S Inquiry Product Inquiry[vc_toggle title=\"Q. What are JEICO\u2019s (JREMO\u2019s) unique technologies or features?\"]Our systems integrate advanced proprietary technologies designed for maximum safety, precision, and operational flexibility: Password-protected PLL technology Proportional control functionality Built-in emergency horn LED indicator circuit (PLL) Operation indicator lamp Multi-step, inching, acceleration, and toggle features Twin mode and...","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false},"_links":{"self":[{"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/pages\/155"}],"collection":[{"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/comments?post=155"}],"version-history":[{"count":5,"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/pages\/155\/revisions"}],"predecessor-version":[{"id":6409,"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/pages\/155\/revisions\/6409"}],"wp:attachment":[{"href":"https:\/\/www.jeico.com\/en\/wp-json\/wp\/v2\/media?parent=155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}