Digital Day/Night Temperature Controller (BETA-4)

Regular Price $69.99

The BETA-4 is capable of controlling any heating or cooling device that is 10-amps or less. Simply plug in your device to the power outlet on the bottom of the BETA-4.  It uses 3-buttons a digital display and offers separate “day / night” temperature settings and features a built-in photocell.

2 in stock

SKU: 8127 Category:


TrolMaster Day/Night Temperature Controller (BETA-4)
• Digital Display
• Built-in Photocell Sensor
• Day-Night Control

1 x   Legacy BETA-4 Controller (BETA-4)
1 x   Temperature Sensor

Input Voltage:                                      120 Volts AC
Output Switch:                                    Relay
Fuse Rating:                                          10A/250V~
AC Power Cord Length:                    1.8m
Temperature Control Range:         40-100°F
Temperature Deadband:                  5°F

BETA-4 Manual

Additional information

Weight 2 lbs
Dimensions 4 × 3.5 × 11 in



TrolMaster Agro Instruments Co., Ltd. is an agriculture technology company, offering next generation environmental controllers in the horticultural market. We have deep roots in the horticulture and Controller industries and have invented a platform that is smart and connective. With an incredible flexibility, our platform is able to cover each individual grower’s needs, from the home hobbyist to large industrial facilities. Our platform offers remote access applications that enable our customers to manage every aspect of their grow facilities from anywhere anytime. We deliver automation, control, data collection, monitoring, and optimization. The upgradability of our systems also offers the value of continual improvements. We listen to growers, build products for growers…


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