| Approvals/certifications | Certified to EN54-2 & 4 by the LPCB. |
| Mains supply | 230V 50/60Hz. |
| Mains rated current | 350mA maximum. |
| Internal power supply | 19V-28.5V (27V nominal). Ripple 7V maximum (battery fault). |
| Total output current limited to | 1.5A @ 230Vac (ImaxA eq 146mA). |
| Quiescent current | 25mA (mains failed, internal sounder active, PSU & gen fault LED lit). |
| Max battery size and type | 2 x 12V 3.2Ah VRLA connected in series. Min. battery size 1.2Ah. |
| No. of detector zone circuits | 4 (Max. length per circuit is 500m). |
| Call point resistor value | 470 to 680Ω. |
| Max. devices per detector zone | 25 detectors (or 32 detectors/manual call points combined). |
| No. of conventional sounder circuits | 4 (Max. length per circuit is 500m). |
| EOL resistor value | 6800Ω 5% Tol. 0/25W (blue, grey, red, gold). |
| Alarm voltage | 27V max, 20V min (final battery voltage). |
| Max. sounder output current | 4 x 200mA (800mA total). |
| Auxiliary relays | Two: (1) Aux. Fire; (2) Fault. Volt free single pole changeover. Max. switch current 1A; Max. switch voltage 30Vdc. |
| Open collector outputs | Two: (1) Reset (Active during reset cycle); (2) Remote (Active during any unsilenced fire condition provided all relevant delays have expired). Max. sink current 30mA, Max. open circuit voltage 27Vdc). |
| Other outputs | 24V Aux. Power (Protected by a resettable fuse. 100mA min. hold current. Resets when fault removed). |
| Auxiliary inputs | Two: (1) ‘Class Change’ (constant sounders); (2) Alert (pulsed sounders). Connect to 0V to trigger, Max. input voltage 27V (non-latching). |
| Engineer (AL3) functions | Program coincidence (double knock); Invoke One Man Walk Test; Program delays; Set up zones for non-latching operation; Program sounders to resound (or not resound) when a new zone enters alarm; Enter fault diagnostic facilities. |
| Expansion connections | Yes – for optional network driver cards (one required per repeater system), relay output cards and EN54-13 sounder circuit interface boards. |
| Product dimensions (mm) | 380 W x 235 H x D 96mm. |
| Construction & finish | Plastic lid and base; RAL7035 textured. |
| IP Rating | IP30. |
| Weight | 1.75kg (without batteries). |
| Operating conditions/temperature | -5ºC to +40ºC. Max relative humidity: 95%. |
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