Function 33-450 is a complete wireless photo-chime kit comprising a 230 V surface-mounted central unit, a PIR motion sensor and adapters for door-contact signalling. When the PIR detects movement or a door contact activates, the chime sounds and a photo trigger can be issued for entrance monitoring in shops, offices and small commercial premises. Housing measures 95 x 80 mm with IP20 protection, supplied in packs of 16.