RE04-1 Single Channel Wireless Emitter

One channel can control up to 20 receivers; Power: 3V CR2430 battery; Battery life: over 2 years; Transmit distance: outdoor 200 meters, indoor 35 meters; Emitting frequency: 433.92 MHz ± 100 KHz; Emitting power: 10 mW; Operating temperature: -20°C ~ +55°C; Available in white or black