Honeywell Home Solid State Relay with 24-240V Built-in Transformer

The complete package universal compatibility, built-in 24 V transformer, silent operation, and unbeatable temperature control. Features: Built-in 24 V transformer for easy installation Compatible with 24 V thermostats with 2-wire connections (R, W) or 3-wire connections (R, W, C) Enables superior temperature control when used with 15-second cycle thermostats Heating command indicator light gives at-a-glance verification of relay operation Simple installation in standard 4" x 4" electrical box Terminal board connection enables easy installation Specifications Application: Control a line voltage resistive load from a low voltage thermostat Dimensions (in.) : 4-7/32 in. wide x 4-7/32 in. high x 2-1/2 in. deep Used With: TH114-A-024T-15S; TH115-A-024T-15S; TH150 Series Compatible with: 24 V thermostats with 2-wire connections (R, W) or 3-wire connections (R, W, C) Frequency: 50 Hz; 60 Hz Approvals, Underwriters Laboratories Inc.