Home Smoke Detector ADR-20R
The ADR-20R is an optical smoke detector designed for early detection of visible smoke at the initial stage of a fire, before the appearance of open flames and a significant rise in temperature. This device is ideal for use in small spaces such as apartments, houses, cellars, garages, and attics. It is suitable for both standalone operation and as part of a network of interconnected detectors. The detector is intended for indoor use in areas where, under normal conditions, there is no smoke, dust, or steam condensation.
When smoke is detected, the ADR-20R activates an optical indicator, a sounder, and switches the built-in relay. The detector can be installed on detection lines of burglar control panels and is certified according to CNBOP 1918/2005.
| Type | Optical smoke detector |
| Purpose | Early detection of visible smoke in residential and small commercial spaces |
| Power Supply | 12 V from burglar control panel (±20%) |
| Quiescent Current | 10 μA (English source) / 400 μA (Russian source) |
| Alarm Current | Max. 24 mA (no voltage), Max. 8 mA (with voltage) |
| Operating Temperature Range | -10°C to +55°C |
| Relative Humidity | Up to 95% at 40°C |
| Relay Output | With changeover contact |
| Contact Load Capacity | 1A / 30V |
| Sensitivity (to test aerosol) | 0.20 – 0.38 dB/m |
| Color | White |
| Dimensions (with base) | Ø112 x 57 mm |
| Mounting Hole Spacing | 72 mm |
| Base | Included with detector |
| Certificate | CNBOP 1918/2005 |
The ADR-20R features a test button for checking operational status. When pressed, it triggers both sound and optical alarms, simulating a fire alarm. The detector is easy to maintain and can be cleaned or replaced if the measuring chamber becomes contaminated. For optimal performance, install the detector on the ceiling in the center of the room, ensuring at least 20 cm of free space from walls and objects that may obstruct airflow. Avoid installation near fans, air conditioners, or areas with steam condensation.