1、High quality ABS material for durability, with LED lights for night use. 2、Simple installation, no wires or cables required. 3、With 1 transmitter (remote control) and 1 receiver. 4、Waterproof design allows you don't have to worry about rainy days. 5、Anti-interference system to avoid signal confusion between neighbors. Features: High quality ABS material for durability, with LED lights for night use. Simple installation, no wires or cables required. With 1 transmitter (remote control) and 1 receiver. Waterproof design allows you don't have to worry about rainy days. Anti-interference system to avoid signal confusion between neighbors. Long distance transmission, high intensity signal, high sensitivity. With a remote control distance of up to 300 meters in open areas, it is suitable for residential and high-rise buildings. Specification: Condition: Brand New Material: ABS Plastics Wireless Distance: About 300 Meters (Open Space) Ringtone Track: 32 Chord Music Controllable Volume: 3-Level Controllable, Mute / Flash Mode Receiver Standby Current: <2.0mA Remote Control Power: <10mW Wireless Frequency: 433Mhz±2Mhz Waterproof Rating: IP55 Use Environment: -10-60 °C Receiver Size: Approx. 85 x 80 x 20mm/3.3 x 3.1 x 0.8 in Transmitter Size: Approx. 73 x 39 x 17mm/2.9 x 1.5 x 0.7in Package List: 1 x Transmitter 1 x Receiver 1 x Screw Package 1 x Adhesive Tape 1 x Instruction Manual