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Optional gateway: Power: Built-in backup lithium battery: 3.7V 1000mAH. The main unit acts as a smart gateway and wireless receiver. When receiving the signal from the transmitter, it will ring and a push notification will be sent to your mobile phone. Open the Tuya APP to check if someone presses the doorbell or the sensor is triggered. Door magnetic sensor and vibration sensor transmitter standby current: <3uA. PIR sensor transmitter standby current: <50uA. Wireless working distance between transmitter and receiver (open area): >80m 16 chord melodies for option. 4-level volume adjustment. PIR transmitter sensing distance: Max. 6m. PIR transmitter sensing angle: Max.95° (Indoor Motion Sensor) Max.40° (Outdoor Motion Sensor) |