The IQL 17 is a low-cost unitary controller that can communicate with other IQLs and LonMark? devices using a LonWorks network. The Trend IQL17 controller has 3 x relay outputs, 2 x triac outputs, and 1 x 0 to 10 V analogue output. It has 3 x thermistor resistance inputs, 1 x 0 to 10 V analogue input and 2 x digital inputs.