A421 Johnson Digital Controller
USD 152.45 USD
Specifications
| Return Shipping Will Be Paid By | Seller |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 30 Days |
| Brand | Johnson Controls |
| MPN | Does Not Apply |
A421 Johnson Digital Controller The a421 series 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 temperature and status of other functions and a three-button touchpad for setup and adjustment. A LED indicates the on / off status of the output relay. The a421 control is 120 vac. The a421 controls provide heating or cooling control, sensor offset, temperature setback, adjustable anti-short cycle delay and a restricted user adjustment mode. The temperature units can be displayed in f or c. The temperature adjustment range is -40 to 212f or -40 to 100c. The a421 automatically changes from heating and cooling.
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