Device Type: Wired Emergency Panic Button (Manual Alarm Activation)
Model / SKU: DH-ARD812 (official model: ARD812 / DHI-ARD812)
Brand: Dahua
Alarm Output:- Contact Type: 1 × NC/NO (Normally Closed / Normally Open) selectable
- Contact Rating: 250 VDC, Max. 300 mA
- Power Supply: None required — passive (dry contact) operation
Physical:- Product Dimensions (L × W × H): 49.5 mm × 32.5 mm × 53.5 mm (1.95" × 1.28" × 2.11")
- Net Weight: 34 g (0.07 lb)
- Gross Weight: 41.5 g (0.09 lb)
- Packaging Dimensions: 56.0 mm × 35.0 mm × 56.0 mm (L × W × H)
- Installation: Surface mount (screws included)
- Casing Material: ABS plastic
- Appearance Colour: Cinerous (grey)
- Reset Mechanism: Reset key included for quick device reset after activation
Environmental:- Operating Temperature: –10°C to +55°C (+14°F to +131°F)
- Operating Humidity: ≤95% RH
- Storage Temperature: –10°C to +55°C (+14°F to +131°F)
- Storage Humidity: ≤95% RH
Certifications: CE; Anti-corrosion Level: Basic Protection
Compatibility: Integrates with all Dahua wired alarm control panels and third-party panels via NC/NO dry contact interface; also compatible with Dahua access controllers (DHI-ASC2202B(T), DHI-ASC2202B-D, DHI-ASC1204B, DHI-ASC2204B-S, DHI-ASC2102B-T, DHI-ASC2202C-D, DHI-ASC1208C-S, DHI-ASC2208C-S)
Key Specs: Dahua DH-ARD812 Wired Panic Button, 1 × NC/NO Selectable Contact, 250 VDC / 300 mA Max Rating, No External Power Required (Dry Contact), Reset Key Included, Surface Mount, ABS Casing (Grey), 49.5×32.5×53.5 mm, 34 g Net Weight, –10°C to +55°C Operating Temperature, ≤95% RH, CE Certified, Compatible with Dahua Wired Alarm Panels & Access Controllers
Usage: Emergency Alarm Activation, Panic Alert Systems, Banks & Financial Institutions, Retail Stores & Cashier Stations, Offices & Commercial Buildings, Healthcare Facilities, Residential Security, and Any Wired Alarm System Requiring a Reliable Manual Emergency Trigger
