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KSHTC Electronic Hygrotherm

The KSHTC Hygrotherm senses the ambient temperature and relative air humidity. Depending on which contact combination is chosen, it then turns on or off a connected device if either the temperature is below, or the humidity above the set point. The integrated LED in each adjustment knob is lit, indicating the active function. Contact Kooltronic for quantity pricing.

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Select Model Type

ModelPowerScale
KSHTCF120-230 VAC, 50/60 Hz°F / %RH
K2SHTC120-230 VAC, 50/60 Hz°C / %RH
K7SHTC24-48 VDC°C / %RH

TECHNICAL DATA

Model Number:
Power:
Scale:
KSHTCF120-230 VAC, 50/60 Hz°F / %RH
K2SHTC120-230 VAC, 50/60 Hz°C / %RH
K7SHTC24-48 VDC°C / %RH
TECHNICAL DATA
Temperature range:
32-140°F (0-60°C) adjustable
Humidity range:50-90% RH adjustable
Switching difference (temperature):
Approximately 3.6°F (2K) ± 1K tolerance
Switching difference (humidity):Approximately 4% RH ± 1% tolerance
Response time:Approximately 5 seconds
Contact type:Change-over contact
Relay output (max. switching capacity):10 A resistive / 1.6 A inductive @ AC 240 V / 0.6A @ DC 60 V*
Max. inrush currentAC 30 A for 10 sec.
Service life:>30,000 cycles
Function control light:LED
Connections:5-pole terminal for AWG 14 max. (2.5 mm)**
Mounting:Clip for 35mm DIN rail (EN 60715)
Housing:Plastic, UL94V-0
Weight:Approximately 3.5 oz (100g)
Mounting position:Vertical
Operating temperature:-40 to 140°F (-40 to 60°C)
Storage temperature:-40 to 140°F (-40 to 60°C)
Protection type:IP20
*Not UL confirmed.
**When connecting with stranded wires, wire end ferrules must be used.
Input:
Contacts 1 & 2: Supply voltage 
Relay output:Contacts 3 & 5 and contacts 4 & 5 (see table below)
Contacts
close at...
open at...
use for
3 and 5
humidity rise or temperature drop
humidity drop or temperature rise
heaters, de-humidifiers, low-temp alarms
4 and 5
humidity drop or temperature rise
humidity rise or temperature drop
cooling, humidifiers, high-temp alarms

  • Standard Features
  • Arrangement
• Controls both temperature and humidity
• Optical function displays (LED)
• DIN rail mountable
• High switching capacity
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Electronic Hygrotherm general arrangement drawing
Dimensions, inches [mm], are for reference only and subject to change.

Dimensions, inches [mm], are for reference only and subject to change.
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Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application.

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Wednesday, August 12, 2026  
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30 Pennington-Hopewell Road
Pennington, NJ 08534 USA
609-466-3400
800-321-KOOL
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