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Home :: Fire Alarm Systems :: Power Supply Units

Power Supply Units


24V Key Switch Timer Relay
Normal price: £55.38
Simply price: £42.35
(£50.82 inc. vat)
Fire Alarm Panel Mains Isolator
Normal price: £31.63
Simply price: £25.76
(£30.91 inc. vat)
24V 5A Relay On A Plate
Normal price: £31.20
Simply price: £24.06
(£28.87 inc. vat)
24V 3A EN54-4 Power Supply Unit
Normal price: £243.80
Simply price: £187.73
(£225.28 inc. vat)
24V 250mA Door Release Power Supply Unit
Normal price: £62.06
Simply price: £49.02
(£58.82 inc. vat)
24V 2A Door Release Power Supply Unit
Normal price: £188.35
Simply price: £143.15
(£171.78 inc. vat)
24V 1.5A EN54-4 Power Supply Unit
Normal price: £203.18
Simply price: £156.44
(£187.73 inc. vat)

Providing a direct and reliable mains source of power to fire alarm ancillary devices, power supply units are essential for a wide range of devices. PSUs are often needed for beam detectors, AOV systems, aspirating smoke detectors, sounder systems and auto-dial communicators, as well as magnetic fire door holders.

These are required because of the voltages needed to operate means they cannot be power via the fire alarm system like other, smaller devices. However, many power supply units feature a backup battery facility which means that the devices can continue to protect your premises even during a power cut. Plus, they don’t prevent communication to the fire alarm system, whether they trigger the alarm or perform a function when activated.

Also, take a look at our range of fire alarm batteries. These are suitable power supply units, as well as fire alarm systems and emergency lighting.

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