Check the listing for details. ISO6 Isolation Relay Module, fixes System Protect issue on ADC-T3000 Thermostat. Condition: New. Listed at 179.99 USD. Six channel isolation relay isolates your thermostat from heating cooling system loads. Reduces the load(current) controlled by the thermostat extending life and preventing thermostats problems on high current systems. Easy to install or retrofit, fits in single gang electrical box or larger space. So how does this fix the ADC-T3000 Thermostat? The ADC-T3000 Thermostat outputs are limited to a maximum of 1 Amp each. During heat or cool operation, some residential and commercial systems draw more than 1 Amp when heat or cool is called for. This can trigger the thermostats "protect" mode for extended periods preventing proper heat or cool operation.Alarm.com recommends the use of "isolation relays" to eliminate these issues and ensure reliable operation. The relays recommended by ADC require one relay per channel meaning that most systems will require 3 to 6 relays in total. They require specials tools and connectors to install and take up significant space. ADC does not provide any support for how to wire these relays to your thermostat and/or HVAC system.The ISO series of HVAC Isolation relays are designed specifically for this application. 6 relays are built-in supporting most residential and commercial systems in a single device. Easy to use screw terminals require no special tools or connectors, and the entire device will conveniently fit into a single or dual gang electrical box. The ISO6 product is clearly labeled with wire labels matching those on your thermostat and HVAC system making installation and wiring a simple task. More information, diagrams, and pictures are available at: www.erhnet.com Note: Metal electrical box shown in photo is a demonstration and is not included.