Product Detail

• NO: Normally open pin
• COM: Common pin
• NC: Normally closed pin
• Learning button on receiver – for programming modes and resetting
• Indicator LED on receiver – provides visual feedback
• Antenna on receiver – extend for better signal reception
• Receiver case included
• 2 x Keyfob transmitters – each with two CR2016 batteries pre-installed

Wiring Diagram

• Power input: Connect DC 5V-30V to +V (positive) and -V (negative) terminals
• Relay output: NO (Normally Open), COM (Common), NC (Normally Closed) – dry contacts
• For device that turns ON when relay activated: connect between NO and COM
• For device that turns OFF when relay activated: connect between NC and COM

Warning

• Always disconnect power before performing any wiring or maintenance to prevent electric shock.
• Ensure the power supply voltage for the receiver is within DC 5V-30V. Relay contacts handle loads from 1V to 250V AC/DC, up to 10A.
• Follow wiring diagrams carefully. Incorrect wiring can damage the device or connected equipment.
• Install the receiver in a dry, protected location, away from excessive moisture, heat, or corrosive substances.
• If unsure about wiring, consult a qualified electrician.
• Usually the receiver and transmitter have been paired in factory. If not, reprogram them.
• Reset before you want to change the operating mode.
• After reset, all remote controls cannot work anymore.
• Replace the battery in time when the remote transmitter voltage is low.
• Slightly stretch the antenna on the receiver for better signal reception.

Operating Mode

The default mode is Latched Mode. Follow the programming steps below to change modes.

Momentary Mode (Mode 1)

Press and hold a button → relay turns on
Release the button → relay turns off

How to program:

1. Press the learning button on the receiver 1 time. The indicator light will flash.
2. Press the desired button on the remote transmitter. The indicator light will flash rapidly and then turn off. Succeed.

Toggle Mode (Mode 2)

Press a button once → relay turns on
Press the same button again → relay turns off

How to program:

1. Press the learning button on the receiver 2 times. The indicator light will flash.
2. Press the desired button on the remote transmitter. The indicator light will flash rapidly and then turn off. Succeed.

Latched Mode (Mode 3)

Press ON button → relay turns on
Press OFF button → relay turns off

How to program:

1. Press the learning button on the receiver 3 times. The indicator light will flash.
2. Press the ON button on the remote transmitter.
3. Press the OFF button on the remote transmitter. The indicator light will flash rapidly and then turn off. Succeed.

Delay Mode (Modes 4/5/6/7)

Press a button → relay turns on and stays on for a set delay, then turns off automatically

Delay options:

• Mode 4 (press learning button 4 times): 5-second delay
• Mode 5 (press learning button 5 times): 10-second delay
• Mode 6 (press learning button 6 times): 15-second delay
• Mode 7 (press learning button 7 times): 20-second delay

How to program:

1. Press the learning button the desired number of times (4, 5, 6, or 7). The indicator light will flash.
2. Press the desired button on the remote transmitter. The indicator light will flash rapidly and then turn off. Succeed.

Reset

Press the learning button on the receiver 8 times. The indicator light will flash rapidly and then turn off, indicating that all stored codes have been cleared. After reset, reprogram your remotes.

Troubleshooting

If the receiver and transmitter cannot operate normally, try the following steps:

• Remote not working after setup: Ensure the learning button was pressed the correct number of times and the transmitter button was pressed while the indicator light was flashing. If receiver was reset (8 presses), reprogram the transmitters.
• Reduced control range: Check transmitter batteries (replace with new CR2016). Thick walls or metal structures may reduce range. Extend receiver antenna.
• Relay not activating: Check power supply to receiver (DC 5V-30V). Verify wiring to NO/COM/NC terminals. Ensure load voltage and current are within relay specs (1V-250V AC/DC, max 10A).
• Indicator light not flashing: Ensure receiver is powered. Check wiring connections.
• Interference: Other 433MHz devices or strong electromagnetic fields may cause issues. Try relocating receiver.

Maintenance

• Cleaning: Wipe the receiver and transmitters with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
• Battery replacement (transmitter): Each remote uses two CR2016 batteries. When range decreases or LED is dim, open the casing, replace batteries with correct polarity, close securely.
• Store devices in a dry, dust-free environment.

Contact

• WhatsApp: +86 15812381273
• Email: linktrol@icloud.com

If there is any question about the products, please contact us first. We will do our best to solve your problem. Thank you.