Product Type Controls Compatible with Product Type Hydronic and Forced Air Systems Includes Display Accessory Type Oil Primary Control Amperage 3.7 A 7.4 A Heater Voltage 120 V AC 240 V AC Overall Height 2 1/2 in Overall Length 4 1/8 in Overall Width 4 3/8 in Mounting Type Junction Box Model Number R7284U1004 For Fuel Type Oil Ignition Type Intermittent Spark Interrupted Spark Safety Switch Timing 15 sec 30 sec 45 sec Standards UL and cUL Component Recognized Electrical