ขาย (Hel) เซนเซอร์ตรวจจับควันแบบไร้สายสําหรับบ้านโรงแรม ราคาที่ดีที่สุด

Smoke Detector Alarm, 9V Battery Operated Photoelectric Sensor Wireless Smart Smoke Alarm with Light Sound Warning for Home Hotel Feature: Support three kinds of alarms: independent sound and light flashing alarm, wireless 433 transmission network alarm. 360 degree smoke detection and alarm, no dead ends, reliable. Built-in 90dB sound and light alarm reminder, effectively reminding people to evacuate. Adopt high-performance two-way receiving, one-time emission and high-sensitivity sensing photoelectric two-way scattering patented technology, which is stable, reliable, safe and accurate. The smoke sensor can work alone and realize independent alarm at home. In order to realize remote control on the phone, the smoke detector needs to be used in conjunction with for the Sonoff RF bridge (433Mhz, EV1527) host. Ultra-low power consumption microcontroller + photoelectric principle technology, battery life up to 3 years. Low voltage alarm: When the battery voltage is lower than 6.8V, a warning sound will be issued to remind the user to replace the battery. Complete embedded patented structure, simple installation, no need for debugging and wiring. Easy to clean and replace the battery. Specification: Product Name: Smart Smoke Detector Power supply: DC 9V 6F22 alkaline battery (not included) Standby current: ≤10uA Alarm current: ≤100mA Alarm indication: Sound alarm and LED flashing Sound level: 90dB / 3 meter Detection area: 20 square meters Wireless frequency: 433MHz Application: for eWeLink Working temperature: -10°C - +50°C Working humidity: ≤95%RH Product size: about 10.5x10.5x3.5cm/4.13x4.13x1.38in (length * width * height) Packing size: about 10.5x10.5x3.8cm/4.1x4.1x1.5in Package weight: about 120g/4.2oz Note: Due to transportation restrictions, the smoke detector battery (DC9V 6F22) is not included. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X Smart Smoke Detector 1 X Instruction (English)