Dahua Wireless Panic Button IP54

ARD821-W2(868) Wireless Panic Button > Two-way RF communication. > Provides multiple LED colors to indicate different statuses. > Cloud update and automatic recovery from update failure. > Offers accidental press prevention. > Battery life up to 5 years if used twice a week. > IP54 rated. Specifications Accessories Download Product Selector Function Indicator Light 1 for multiple statuses (pairing, communication, and more) Remote Update Cloud update Button 1 Signal Strength Yes Low Battery Detection Yes Battery Level Display Displays battery level on app Wireless Carrier Frequency 868.0 MHz–868.6 MHz Communication Distance Up to 1,400 m (4,593.18 ft) in an open space Communication Mechanism Two–way Encryption Mode AES128 Frequency Hopping Yes General Operating Temperature –10 °C to +55 °C (+14 °F to +131 °F) (indoor) Operating Humidity 10%–90% (RH) Battery Model CR2032 Battery Life 5 years (if used twice a week) Product Dimensions 55 mm × 36 mm × 14.2 mm (2.17" × 1.42" × 0.56") (L × W × H) Packaging Dimensions 95 mm × 59.5 mm × 30.5 mm (3.74" × 2.34" × 1.20") (L × W × H) Installation Wall mount; portable Net Weight 18 g (0.04 lb) Gross Weight 48 g (0.11 lb) Certifications CE Casing Material PC + ABS Protection IP54 Technical Operating Current 28 mA Test Mode Yes newsletter