DC37V-12V Mini Relay Wireless Remote Control Switch 4 Modes for LED Lamp 433Mhz Small Receiver Wireless Contact Point DC3.7V-12V Mini Relay Wireless Remote Control Switch 3 Modes for LED Lamp 433Mhz Small Receiver with Box/White Transmitter Feature: 1. The use of high-quality materials, small size, with good impact resistance 2. The output mode is slightly moving, self-locking, interlocking, and the delay can be set by itself 3. Super heterodyne receiving circuit, relay normally open normally closed point output, strong anti-interference 4. Support DC3.7-12V wide voltage use, strong compatibility, can support 433 wireless frequency 5 Relay output: provide isolated contact switch, you can control the signal line on and off, button switch modification Specifications: Receiver: Working voltage: 5-12V Working frequency: 433Mhz Size: 40*20*10.5mm Remote control: Working frequency: 433Mhz Distance: