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433mhz EV1527 Standalone/Wireless Photoelectric Smoke Sensor Fire Alarm Smoke Detector ,Sound&Flash when Alarm,for G90B wifi alarm and G19,G8218GIt can use alone, or use with wireless alarm system, such as:WIFI GSM Alarm G90B Feature:1.MCU Technology2.Apply optical smoke test room3.Insect-resistant design4.LED light display5.Using ABS material Parameter:1. Power :6F22 DC9V battery2 .Static current: 10uA3. Alarm current: 15mA4. Working temperature: -10C~+50C5. Humidity: 95%RH6. Alarm mode: sound & flash7. Wireless frequency:433MHz8. Size: 107*44mm Product Picture: Package Content:1pc Wireless Smoke Sensor 433MHZ EV1527code (battery not included) Important NotesWholesales & Retail are both available. It is our pleasure to build a long-term business relationship with you. Will try to offer best price for your resell business! Please feel free to contact us at Trade Manager/Email/Skype. (skype ID: hongwuxieyu)Big Order for Big Discount!