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• Enables superior temperature control when used with 15-second cycle thermostats • Dual input: Compatible with a 24 Vac or 4-32 Vdc signal • Compatible with all 24 V thermostats with 2-wire connections (R,W) or 3-wire connections (R,W,C) • Heating command indicator light gives as-a-glance verification of relay operation • Simple installation in standard 4 in. x 4 in. electrical box • Terminal board connection enables easy installation |