EV-PYS is an Optical Smoke Detector with integral Sounder compatible with Evolution analogue addressable sys tem devices. 
 
The device is an extremely efficient solution, in both cost and power consumption, for providing loop powered sounders combined with some detection. 
 
The detector will fit to a range of Nittan bases including the dedicated Beacon Base EV-PYSVAD 
Device address may be set using the Nittan EV-AD2-EXT Hand held programmer.