A premium range of fire alarm remote power supply units, the Dycon D2433-7 is a 3amp switched-mode power supply complying with EN54-2 and EN54-4.

The PSU features on demand load sharing to provide exceptional flexibility, allowing rapid, large-capacity, battery charging with either extended, standby, hold-up duration at light loads, or short, high current, peak loads where the spare capacity is diverted to battery charging.

All units are fitted with a constant operation temperature sensor which automatically adjusts the charging rate to ensure that a battery is never over charged simply because the ambient temperature has risen.

Rather than relying on simple, voltage readings to gauge the battery condition, the D243X-series units constantly check the batteries impedance which gives a more accurate reading and prior warning of impending problems.

• Microprocessor controlled operation and protection

• On-demand battery charging and load output current sharing

• Battery impedance monitoring

• Automatic output reconnection after short circuit fault

• No user-serviceable fuses, outputs protected by electronic E-fuses

• Two independent, electronically fused, switched outputs

• Three opto-relay fault outputs for AC Power Fail, Battery Fault, PSU Fault

• Four status LED’s; I x external and visible, 3 x inside the housing, visible on removing the lid

• Over-voltage output protection

• Battery-free option can be selected by a jumper. Note : Using this jumper to disable the battery monitoring when a battery is fitted will create an EN54-4 non-compliance.

• On-board or remote temperature sensing (jumper selectable) with optional remote sensor

• UK-manufactured electronics and steel housings