Hochiki Manual Call Point with integral short-circuit isolator is fully compatible with Hochiki’s ESP analogue addressable protocol. The unit incorporates a bicoloured LED, which can be selected as pulsing/non-pulsing for communications polling and is continuously lit when the manual call point is operated – in these two states the LED will show red. The LED will show amber when a short-circuit is present but will switch to red if the unit is activated. The unit operates by pressing the EN54 compliant non-frangible (plastic) element and produces a high-level ESP interrupt. A built-in test function initiated by the control panel ensures the integrity of the device at all times and the device can be tested by insertion of a test key in the underside of the unit. Two terminal blocks are provided for easy connection to the loop wiring.