Dual Zone 24VAC Temperature Controller Box for Controlling Damper Solenoid Valve Actuator Pump Contactor Relay

The controller input is 100-240VAC and has two outputs of 24VAC for 2 Separate zones with 2 sensors. Please consider that the output is 24VAC not DC. The controller can be used for a wide variety of applications including open and close Solenoid valves, actuator valves, Contactors and relays, motorized or actuator dampers or any device that works with 24VAC.

Features:

Dual relays and sensors with independent temperature control for two zones.

Dual color displays (red and blue) for each zone.

Record of maximum high temperature for each sensor or zone.

Selectable between Celsius and Fahrenheit.

Dual high alarm functions (buzzer and flash alarm).

Dual timer output delays for Out1 and Out2.

Temperature calibration for each sensor.

Memory retention of settings and factory default options.

Timer delay protection to prevent frequent reboots for each zone.

Equipped with circuit breaker for safety.

Technical Parameters:

Temperature measuring range: -30 to 300°C (-22 to 572°F).

Power consumption: <3W.

Power supply: 100-240VAC.

Output: 2 Output 24VAC

Sensor Specifications:

Measurement range: -50 to 300°C.

Cable length (L): 6.5 ft (2m) SS braided metal wire with internal fiberglass insulation for high-temperature durability.

Sensing tip material: Stainless steel.

Sensing tip shape: Pin Point L shape.

Sensor type: Negative Temperature Coefficient NTC sensor.

Please contact us if you want to change the sensors and it can be change according to your application.

Applications:

Control Hot-Water Heating pump or boiler via 24VAC valves, actuators, Relays

• 24 VAC zone valves (e.g., Honeywell/Taco/Belimo) for radiant floor or baseboard zones
• 3-way mixing valve actuators (24 VAC) to control supply water temperature
• Fan-coil or unit-heater water valve actuators (open/close on temperature)
• Boiler/pump “call for heat” via a valve end-switch (controller opens valve → end-switch starts boiler/pump)
• Interposing relay (24 VAC coil) to start a circulator when the controller can’t supply the valve/pump current directly

Air Systems, fan Ventilation or humidity control via 24VAC motorized damper, water valves, solenoid valve, contactors or relays

• Motorized dampers (24 VAC spring-return or non-spring) for fresh-air/economizer or bypass
• VAV/terminal reheat water valves (24 VAC actuators) to modulate or stage heat on temp thresholds
• Duct heater enable using a 24 VAC contactor/relay coil (respecting all safety interlocks)
• Attic/space exhaust fans via 24 VAC relay (temp-based on/off)

Humidity & IAQ control via 24VAC humidifier solenoid, steamed (using temp as proxy or combined control)

• Whole-home humidifier solenoid (24 VAC) enable when temperature indicates heating demand
• Steam humidifier / dehumidifier “enable” input via 24 VAC relay (many accept dry-contact; use relay to isolate)
• ERV/HRV damper actuators (24 VAC) tied to temperature conditions (e.g., over-temp purge)

Refrigeration / Cooling for controlling solenoid

• Liquid-line solenoid valve (24 VAC) for pump-down or temperature-based hold-closed
• Evaporator fan control via 24 VAC relay (cycle fans on coil/space temperature)
• Crankcase heater enable via 24 VAC relay under low-ambient conditions
• Chiller “enable” input (through 24 VAC relay to present a dry contact if required by the chiller)

Process / Industrial / Lab

• Environmental chamber dampers or water valves (24 VAC actuators)
• Heat-exchanger water valve (24 VAC) to trim temperature on a loop
• Contactors with 24 VAC coils for heaters/blowers that run on mains, switching via the controller
• AC-input SSRs (rated for 24 VAC control) to switch mains loads without a mechanical relay*

Agriculture / Greenhouse / Aquatics

• Irrigation/misting valves (common 24 VAC sprinkler valves) triggered by temperature (e.g., cooling/misting)
• Greenhouse vent/window actuators (24 VAC) for temperature-driven ventilation
• Poultry/livestock barn dampers (24 VAC) for heat relief
• Aquarium/pond cooling water valve (24 VAC) or chiller enable via relay

Manual