The A421 Series Electronic Temperature Controls Are Single-Stage Controls With A Single-Pole, Double-Throw (Spdt) Output Relay. A421 Controls Feature A Bright Backlit Lcd With Adjustable Brightness And A Three-Button Touchpad Interface That Can Be Set Up To Restrict User Adjustments. An Led Indicates The Output Relay'S On/Off Status. Standard A421 Series Control Modules Have Simple On And Off Temperature Settings For Heating Or Cooling, An Adjustable Anti-Short Cycle Delay, Temperature Setback, And Sensor Offset Capability. The Temperature Control Range Is -40 To 212F Or -40 To 100C. The A421 Controls Are Available Either In Type 1 (Nema), Ip20 (Ce), High-Impact Plastic Enclosures Suitable For Surface Or Din Rail Mounting Or In Type 4X (Nema), Ip67 (Ce) Watertight, Corrosion Resistant Surface Mount Enclosures.
⚠️ WARNING (California Proposition 65): This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Q: What are the dimensions of the Johnson Controls A99BB-200C Temperature Sensor?A: The dimensions are five point nine inches in length, five point four inches in width, and zero point six inches in height.
Q: What materials are used in the A99BB-200C Temperature Sensor?A: The primary material used in the A99BB-200C Temperature Sensor is copper.
Q: What is the temperature control range of this sensor?A: The temperature control range is from negative forty degrees to two hundred twelve degrees Fahrenheit, or negative forty degrees to one hundred degrees Celsius.
Q: How do I install the Johnson Controls A99BB-200C Temperature Sensor?A: You can install the sensor in either a surface or DIN rail mounting configuration, suitable for Type 1 or Type 4X enclosures.
Q: Is the A99BB-200C Temperature Sensor suitable for residential use?A: Yes, it is designed for both residential and commercial applications, providing reliable temperature control.
Q: Can this sensor be used for both heating and cooling systems?A: Yes, the A99BB-200C can be used for heating or cooling systems with simple On and Off temperature settings.
Q: How do I clean and maintain the A99BB-200C Temperature Sensor?A: To maintain the sensor, ensure it is kept free from dust and moisture, and regularly check connections for corrosion.
Q: Is the A99BB-200C waterproof?A: Yes, the Type 4X version of the sensor is watertight and corrosion-resistant, making it suitable for outdoor use.
Q: What should I do if the A99BB-200C arrives damaged?A: If the sensor arrives damaged, contact the retailer for a return or replacement within their specified policy.
Q: Does the A99BB-200C come with a warranty?A: Yes, the product typically comes with a manufacturer's warranty, check with the retailer for specific terms.
Q: How do I set the temperature on the A99BB-200C?A: You can set the temperature using the three-button touchpad interface on the unit.
Q: What is the output relay type for the A99BB-200C?A: The sensor features a single-pole, double-throw (SPDT) output relay for temperature control.
Q: Is the A99BB-200C safe for indoor use?A: Yes, it is safe for indoor use when installed according to the manufacturer's guidelines.
Q: What type of packaging does the A99BB-200C come in?A: The A99BB-200C comes in a package with dimensions of three centimeters in length, sixteen centimeters in width, and sixteen point eight centimeters in height.
Q: Can I adjust the brightness of the display on the A99BB-200C?A: Yes, the A99BB-200C features an adjustable brightness for its backlit LCD display.