Cordless call and emergency notification device. Easy to operate, just press the button on the transmitter It will notify you by two kinds of sounds (normal call and emergency sound) and light. Operating distance is about 15m (straight sight)
Components: Transmitter x 2, Receiver x 2: Transmitter x 1.6 x H 0.6 inches (W 40 x D 69 x H 15 mm), Receiver (W x D x H): 4.7 x 3.3 x 1.0 inches (120 x 85 x 25 mm); Weight: Transmitter = 2 x AC adapter (2 included), AA batteries x 4 (sold separately).