Description
Key Features
- Ideal for environments that are dirty or smoky under normal circumstances
- Suitable where smoke detectors are unsuitable
- Wide operating voltage: 9 V to 33 V DC
Product Information
| Supply wiring | Two-wire monitored supply, polarity insensitive |
|---|---|
| Terminal functions | L1 IN & L2 IN; L1 OUT & L2 OUT; –R remote indicator negative connection |
| Supply voltage | 9 V to 33 V DC |
| Ripple voltage | 2 V peak-to-peak max at 0.1 Hz to 100 kHz |
| Alarm voltage | 6 V to 28 V DC |
| Alarm indicator | Red light emitting diode |
| Design alarm load | 420 Ω in series with a 2 V drop |
| Holding voltage / current | 6 V / 10 mA |
| Remote output (–R) | Current sink to negative line, limited to 17 mA |
| Storage temperature | –30 °C to +80 °C |
| Operating temperature |
A1R: –20 °C to +50 °C; BR: –20 °C to +65 °C; CS/CR: –20 °C to +80 °C |
| Humidity | 0 % to 95 % RH (no condensation or icing) |
| IP rating | IP54 |
| Dimensions | Ø 100 mm × H 42 mm |
| Weight | 80 g |
| Materials | Housing: white flame-retardant polycarbonate; Terminals: nickel-plated stainless steel |
Current Characteristics
| Supply Voltage (V) | Quiescent (A1R Std) | Alarm (A1R Std) | Quiescent (A1R LED) | Alarm (A1R LED) | Quiescent (A1R LED/Mag) | Alarm (A1R LED/Mag) |
|---|---|---|---|---|---|---|
| 24 | 45 µA | 52 mA | 55 µA | 52 mA | 55 µA | 52 mA |
| 9 | 40 µA | 17 mA | 50 µA | 17 mA | 50 µA | 17 mA |
Variants & Part Numbers
| Class | Max Application Temp (°C) | Max Static Response Temp (°C) | Part No. Standard | Part No. Flashing LED |
|---|---|---|---|---|
| A1R | 50 | 65 | 55000-122 | 55000-121 |
| BR | 65 | 85 | 55000-127 | 55000-126 |
| CR | 80 | 100 | 55000-132 | 55000-131 |
| CS | 80 | 100 | 55000-137 | 55000-136 |
Operation
In the A1R, BR and CR variants, paired NTC thermistors (one exposed, one insulated) sit on the PCB. Under stable conditions they have equal resistance; a rapid temperature rise causes the exposed thermistor’s resistance to drop relative to the insulated one. When the ratio exceeds a factory preset threshold, the detector alarms. CS variants use a single NTC thermistor network to provide a voltage output proportional to ambient temperature.
Compliance & Certification
- EMC Directive 2014/30/EU
- Construction Products Regulation (EU) 305/2011
- CPR, LPCB, VdS, VNIIPO, SBSC, FG & BOMBA approvals*
- ISO 9001:2015 & ISO 14001:2015 certified (LPCB ref. 010)
*Not all detectors carry every approval; see product pages for details.
