TUYA WiFi Doorbell Alarm Wireless Intelligent Doorbell APP Control Support DIY 433MHZ Wireless Device

Name: tuya WIFI doorbell alarm Feature: 1.Power Memory  2.58 Ringtones  3.Volume Level  4.Mute function  5.Durable Use 6.DIY Add 433Mhz Wireless Sensors to Your Doorbell System Working together with door/PIR motion/smoke sensors etc,making your doorbell a burglar alarm system 7.APP notification online, guarding your home at anytime anywhere 8.Built-in Backup Battery, Your doorbell can be working on in case of power failure Product Name:SOS distress bracelet Product model: YCFSB-1527-0 Working voltage: DC3V Working current: 13MA Frequency deviation: ± 0.2MHZ Working frequency: 433.92MHZ/315MHZ (optional) Transmission power: 10MW Launch distance: 100M (open space) Encoding chip: EV1527, HS2262 Modulation mode: ASK Working temperature: -20 ℃~+70 ℃ Product Name:SOS pager wireless remote control YCF8101-1 Technical Requirements 1. Working voltage: DC6V 2. Working current: 9-12mA 3. Working frequency: 433MHz 4. Transmission power: 10-15mW 5. Launch distance: 50m (open space) 6. Frequency deviation: ± 0.2MHz 7. Encoding chip: EV1527 (learning code) 8. Vibration resistance: 330K 9. Number of keys: 1 key 10. Modulation method: ASK 11. Static current: 0uA 12. Volume: 50 (diameter) * 13.4 (thickness) mm The package includes: Tuya WIFI doorbell alarm * 1 set SOS distress remote control * 1PC (optional) SOS distress bracelet * 1PC (optional)