ECOJAY SmartZone residential & light commercial zoning Controllers are easily configurable to satisfy a wide range of application and equipment requirements. Simple installation and setup make smartzone perfect for CHANGE-OUT, RETRO-FIT, NEW-INSTALL and UPGRADES.  brightly-lit LED display shows system mode & status information as well as, temperature readout from included supply sensor.  Color-coded LED's on all wiring connectors simplify troubleshooting by showing all inputs and outputs without using a voltmeter. SmartZone maximizes equipment efficiency & protection with exclusive built-in ‘Time & temp’ staging controls.  Universal compatibility means smartzone works with all equipment types (Heat Pump, Dual Fuel, Gas, Electric, etc), thermostats & 24V dampers.  Time-saving and exclusive features like Fresh-Air, SmartLINK for up to 20 zones & push-in terminals make SmartZone the smart choice.