Designed to expand the system from 16 zones to 64 (all onboard) by simply plugging it into the external keypad bus.

Features: 

• Each 8-Zone expander provides an extra 8 zones. 
• 8 wired, end-of-line supervised zone inputs
• 2 x positive 12V programmable outputs that supply 80mA of current 
• The outputs are normally open relay (max. 14Amp) contacts & can be either pulsed or latched 
• Optional tamper per zone using double end-of-line resistors 
• Programmable loop response time 
• Dedicated box tamper input 
• Excellent protection against lightning (provided by specialist "zap tracking" and transient suppressors)