*Transmitter Only - Wall Switch and Back Plate Not Included Can be used with any make of light switch (except dimmers) 4 switch inputs Up to 100m transmission range to the receiver Up to 2-year battery life The EST.1 transmitter can be fitted behind most conventional single to quad gang wall switch plates (not supplied) and uses 2 x AAA alkaline batteries (not supplied). The switch can be surface or flush-mounted almost anywhere without running a single cable. The transmitter will work with any receiver in the EasySwitch range from up to 100m away. You can operate as many receivers as you want and by selecting the receiver MODE the switch can act as a single or two-way switch. Typical uses for the EST.1 include switching outside lights or garden features from inside the home. Technical Specifications Battery Type 2 x AAA alkaline batteries (not supplied) Battery Life Up to 2 years with normal usage Operating voltage 4.5 volts Wireless Transmission 433.92Mhz Transmission Range 100m Temperature Range -10°C to +40°C Enclosure Plastic Weight 100 grams Dimensions 100 x 20 x 10mm Downloads EST.1 Instructions EST.1 Datasheet