DEMCO Photoelectric Smoke Detector D-233 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.
|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|
|D-233-2L||-||10.8~33V||80μA||22/55mA||160μA||30 Sec.||80mA||1-5 Sec.||D34003||UL/CE|
|D-233-2H||135 ± 5 ºF||10.8~33V||80μA||22/55mA||160μA||30 Sec.||80mA||1-5 Sec.||D32003||UL/CE|
|D-233-2HL||135 ± 5 ºF||10.8~33V||80μA||22/55mA||160μA||30 Sec.||80mA||1-5 Sec.||D34003||UL/CE|
0.98–2.40%FT Obscuration (UL) ; 0.08–0.14 dB/m (EN)
50-foot rating for heat detector
|Temperature Range||-10 ºC to 50 ºC|
0 to 95% RH, no condensation or icing
|Dimensions (H x D)||
46 X 100mm with base
130g/set with base
Specifications are subject to change without prior notice.
Feel free to ask any questions over the phone, or get in touch via our contact form below. Your message will be dispatched directly to our staff who will answer as soon as they can.