The HE-PSU(5.25A) is a fully certified to EN54-4 power supply providing a stable and fully regulated, true 24 V output for fire alarm system applications under all power conditions. The unique regulation techniques ensure that even when running on standby batteries, a stable 24 V supply is available to all parts of the system ensuring that all 24 V powered devices connected are supplied with optimum power. The powerful onboard microcontroller ensures that all battery types are conditioned with optimum, temperature compensated charging algorithms to maximise battery life and maintain batteries in top condition. The HE-PSU(5.25A) is housed in a robust, key-lockable enclosure and is suitable for a wide range of uses. The unit can be used in conjunction with the FIRElink range of air sampling detectors and those 'Smart-Fix' CHQ Modules that require an auxiliary 24 V dc power supply.