Features: 150m Transmission: The signal of the wireless remote control switch can pass through wall floor and door to stably control the receiver anywhere within a reliable distance. Range up to 50m in the absence of obstacles. 2Safe Control: Highly secure with a low repetition rate it is extremely easy to set up and learn and when the remote is lost it can delete the old code and relearn the new one so you can always control it. 3Working Parameter: 315Mhz wireless RF switch adopts ASK amplitude modulation 6V working voltage less than 15MA current. 2pcs CR2016 coin cell 150mAh battery powered. 4Applications: Wireless RF switch is suitable for home and shopping mall burglar alarms for electric car car and motorcycle alarms various door control systems and other intelligent controllers. 5Easy to Use: RF switch is is equipped with a key chain which is very convenient. You can hang it on your wallet or bag without worrying about losing it. Specification: Item Type: 315Mhz Wireless RF SwitchMaterial: ABSGross Weight: 20g / 0.7ozVoltage: 6VCurrent: 15MAFrequency: 315MHzChip: 1527MTransmitting Distance: 50m/54.7yd ( Open Environment )Modulation Mode: ASK Amplitude ModulationBattery: 2 CR2016 Coin Cell 150mAh ( Included ) Package List: 1 xRemoteControl1 x Key Chain