Apollo Conventional Manual Call Point is comply with EN 54-11 and available for both indoor and outdoor operation. The manual call point consists of a 470 ? resistor in series with a normally open switch contact, Helps to reduce installation time as all the initial installation cabling is wired to a terminal block which connects neatly to the call point. Once activated, the manual call point can be reset by inserting the test key into the bottom of the unit until the key clicks into position. Remove the test key and push the front cover up until it clicks home.