Smoke Detector – UL Listed (Model D-233)
SMOKE DETECTOR – UL LISTED
(MODEL D-233)
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.
- 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 |
| 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 |
| Smoke Senitivity |
0.98–2.40%FT Obscuration (UL) ; 0.08–0.14 dB/m (EN)
|
| Ceiling Spacing |
50-foot rating for heat detector
|
| Temperature Range | -10 ºC to 50 ºC |
| Humidity |
0 to 95% RH, no condensation or icing
|
| Dimensions (H x D) |
46 X 100mm with base
|
| Weight |
130g/set with base
|
Specifications are subject to change without prior notice.