Transcription of A421 Series Electronic Temperature Controls
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A421 Series Electronic Temperature Controls
Single-Stage Electronic Temperature Controls Code No. LIT-1900933. A421 Series Electronic Temperature Controls Description Features The A421 Series Electronic Temperature easy-to-read, bright, adjustable backlit LCD. Controls are single-stage Controls with a screen displays the Temperature , single-pole, double-throw (SPDT) output parameters, and status clearly and allows relay. you to adjust LCD brightness for the ambient light conditions. Custom icons on A421 Controls feature a bright backlit LCD the display provide visual cues on system with adjustable brightness and a three-button and control status. touchpad interface that can be set up to basic and advanced programming menus restrict user adjustments. An LED indicates allow you to easily set up your control the output relay's On/Off status. Standard application on the LCD using a simple A421 Series control modules have simple On three-button touchpad interface.
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
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