OSSCA RD-638 Light Sensor Wireless Doorbell - White (3 x AA)
Brand: OSSCA - Model: RD-638 - Color: White - Material: Plastic housing - 32 Melodies for options - Volume adjustable - Power supply: 3 x AA batteries (not included) or DC 4.5V 300mA - Sensor detecting range: 0~5m - Sound volume: 90 +/- 10dB - Packing List: - 1 x Doorbell - 2 x Install screws - 2 x Sleeves - 1 x Wall-mounted holder