Single Stage Temp Controller with Sensor, 120/240VAC, NEMA1, 6' 6" lead, -40 to 212F, HTG/CLG Description The A421 Series Standard Electronic Temperature Controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. The controls feature an adjustable backlit LCD for viewing the temperat
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Great product
Everything about the product and purchasing experience is and was beyond expectation. The contollers ( I purchase 3 120v & 1 24v) work flawlessy. Easy to program. Great product.