| Material: | High impact ABS plastic enclosure | 
| Dimensions: | 3.05 cm x 11.7 cm (1.2 in. x 4.6 in.) | 
| Operating Temperature: | -29°C to +49°C (-20°F to +120°F)For UL Certificated installations, 0°C to +49°C (+32°F to +120°F) | 
| Radio Frequency Interference (RFI) Immunity: | No alarm or setup on critical frequencies in the range from 26 MHz to 950 MHz at 50 V/m. | 
| DS936: | Complies with Environmental Class II (EN50130-5) | 
| Height Range: | 2 m to 3.6 m (7 ft to 12 ft) | 
| Location: | Surface or semi-flush on ceiling or on standard 10 cm (4 in.) octagonal electrical box | 
| Pattern Pointability: | ±15° rotational | 
| Alarm: | Normally-closed reed relay rated at 3.0 W, 125 mA at 28 VDC for resistive loads and protected by a 4.7 Ω resistor in the common C leg. | 
| Tamper: | Normally-closed cover activated tamper switch with separate terminals. Tamper contacts rated 125 mA at 28 VDC maximum. | 
| Current: | 20 mA at 12 VDC | 
| Voltage: | 10 VDC to 15 VDC |