NC812KE, NC822KE and NC832KE indicator panels are fully compatible with all 800 Series call points, ceiling pulls, infrared ceiling receivers, monitoring points, overdoor lights and remote sounders. Depending on the devices wired to it, Standard and Emergency calls can be indicated via its buzzer and zonal LEDs. An optional Mute button is also provided to allow the user to silence standard calls. Features A range of 10 to 30 Zone Emergency Indicator Panels c/w 12V 400mA PSUs. Fully compatible with C-TEC's entire range of 800 Series Call System components. Capable of indicating standard (constant tone) and emergency (intermittent tone) calls. 10, 20 or 30 zonal alarm LEDs (dependent on model purchased, see below for parts listing). Optional mute button. 2 volt-free relay contacts. Surface mounting. Connections for optional Repeater panels and sounders to increase call indication levels.