Hangzhou Chunde Technology Co., Ltd.  

Product Name: Dahua Smart Home Indoor Wireless Curtain PIR Detector (ARD1611-W) Model NO.: ARD1611-W Receive Frequency: 433MHz/868MHz/915MHz Alarm Volume (within 1m): ?110dB Transmission Mode: Wireless Working Principle: Electro-Optical Type Application: Indoor Certification: E-MARK, CE, FCC Working Mode: Active Signal Transmission: Wireless Alarm Type: Infrared Detector Humidity: <95 Detection Range: 10m/15