Features:

• CSA C US certified for use in USA and Canada
• Powered zone group pump output
• External diagnostic LEDs
• tN4 expansion terminals
• Supports two-stage tekmarNet 2 thermostats
• Outdoor sensor input
• Only requires 2 wires per zone, four 24 V (ac) powered zone outputs
• For use with tekmarNet 2 thermostats only
• Isolated end switch