2 Buttons Waterproof Wireless Remote Control RF Transmitter 3 mi (Model: 0021064) Choose Antenna::Magnetic Sucker Antenna with 1.5 Meters Cable When use the manual switch

When use the manual switch to connect the terminals "K1" and "G"

Maximum Load Current: 10 A / each channel

(No connection is required without a load

Channel 4 is useless

2 Buttons Waterproof Wireless Remote Control RF Transmitter 3 mi (Model: 0021064) Choose Antenna::Magnetic Sucker Antenna with 1.5 Meters Cable When use the manual switchApplication: This wireless RF transmitter is a super long range 2 big buttons waterproof radio remote control. It is developed by LORA (Long Range) wireless communication technology, so it has ultra long working distance, ultra high receiving sensitivity, superior anti interference ability, and smaller power consumption. It uses a transceiver chip to implement bidirectional communication. Its ideal working distance can reach more than 5 kilometers,