DEMCO Photoelectric Smoke Detector D-233-2 with its new sensor design incorporates an internal pulsing LED and a photo-diode at an obtuse angle, is ideal for applications where slow-burning or smouldering fires are likely.
The D-233 has an advanced solid- state, low-voltage, surface-mount circuitry and are designed for 2-Wire installation using the D32003 universal base. The detector head is installed into the base with a simple twist-lock action.
The 360-degree detector design permits smoke entry from any direction, and a unique sensing chamber that permits operation in open areas with air velocities from 0 to 300 fpm. A fine wire mesh extending between offset ports in the exterior and interior walls screens insects from the chamber and obstructs light from passing directly to the interior part.
- Certification/Listing-UL and CE.
- Advanced detection and discrimination algorithms.
- Advanced solid-state, low-voltage, surface-mount circuitry.
- Suitable for the majority of application conditions.
- Easy installation, testing and maintenance.
- Sleek low-profile housing design.
- Flashing LED in standby mode.
- Robust and reliable sensor head.
- Two red LEDs to allow 360-degree viewing.
- A fine mesh insect screen protects the chamber area i.e. to avoid potential nuisance alarms.
- Optional/integrated heat detector for D233-2H and D233-2HL models.
Model Heat Sensor Setting Voltage DC (Max./ Min.) Stand by Current (Max.) Alarm Current (12/24V) Surge Current (Max.) Start Up Time (Max.) Permissible Current (Max.) Cycle Time Base Model No. Safety D-233-2 - 10.8~33V 80μA 22/55mA 160μA 30 Sec. 80mA 1-5 Sec. D32003 UL/CE Remarks: L = Remote LED indicator output. 4.0Vdc minimum / H = Heat detectorSmoke Senitivity 0.98–2.40%FT Obscuration (UL) ; 0.08–0.14 dB/m (EN)Ceiling Spacing 50-foot rating for heat detectorTemperature Range -10 ºC to 50 ºC Humidity 0 to 95% RH, no condensation or icingDimensions (H x D) 46 X 100mm with baseWeight 130g/set with baseSpecifications are subject to change without prior notice.