One Stage Setpoint Control 150 - 51891

Controls & Sensors
51891 MFG #: 150
0.00000 /

The One Stage Setpoint Control 150 is designed to operate a single component of a heating or cooling system in order to maintain a set temperature. It can be used in applications ranging from heating a swimming pool to maintaining a constant slab temperature in a commercial car wash bay. This control regulates a constant setpoint water temperature for heating or cooling. The 150 is designed to operate a single relay (rated at 240 V, 8 A) to control a single device such as a boiler, pump, or valve.
  • Specifications


  • Digital display

  • Heat or Cool Setpoint Control

  • Normally open AND normally closed relay

  • Pulse Width Modulation Control


Control Microprocessor control. This is not a safety (limit) control
Packaged weight 1.0 lb. (450 g)
Dimensions 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
Enclosure White PVC plastic, NEMA type 1
Approvals CSA C US, meets class B: ICES & FCC Part 15
Ambient conditions Indoor use only, -20 to 120°F (-30 to 50°C), RH ≤90% Non-condensing
Power supply 24 V (ac) ±10%, 50/60 Hz, 1.3 VA, 24 V (dc) ±10%, 0.02 A
Relay 240 V (ac) 8 A max, 1/4 hp
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included Universal Sensor 071
-Optional tekmar type #: 071078082
Warranty Limited 3 Year Warranty