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The WSK-24 controls HVAC equipment using an occupancy sensor and door switch, and is packaged with 24V dry contact receiver, a wireless PIR occupancy sensor with mounting kit, a wireless door sensor with mounting kit, and a wiring harness.


  • Wireless system provides quick and easy installation
  • Pre-configured door sensor and occupancy sensor
  • Guest comfort is maintained by never turning off HVAC equipment when someone is in the room – even if they are sleeping
  • Fuse protection
  • Long battery life
  • Low battery indication
  • Receiver memory retained after power loss
  • Optional sliding door/window sensor can be easily added.

Product Specifications

Wireless Occupancy Sensor for HVAC equipment
Dimensions (in.)
Door Sensor: 2-19/64 in. high x 1-13/32 in. wide x 19/32 in. deep; Receiver: 3-13/32 in. high x 3-19/32 in. wide x 1-13/64 in. deep; PIR Sensor: 3-29/32 in. high x 2-51/64 in. wide x 1-3/32 in. deep
Dimensions (mm)
PIR Sensor: 100 mm high x 71 mm wide x 28 mm deep; Receiver: 86 mm high x 91 mm wide x 31 mm deep; Door Sensor: 58 mm high x 36 mm wide x 15 mm deep
Used With
TB6575, TB8575; TB7100; T7350/T7351 (requires R8222 switching relay)
PIR Detection Pattern--Length: 3 to 8 meters when mounted 2 meters above the floor; Angle: 140 degrees
Item Type
Supply Voltage
Receiver: 24 Vac/Vdc at 50/60 Hz; Standby power consumption 15 mA; Channel 1 relay output, N.O.; Door Sensor: Two CR2032 lithium batteries; PIR Sensor: Three AAA E92 1.5V alkaline batteries
Operating Temperature Range (F)
Receiver: -5 F to 140 F; Door Sensor: -4 F to 140 F; PIR Sensor: -4 F to 104 F
Operating Temperature Range (C)
Receiver: -21 C to 60 C; Door Sensor: -20 C to 60 C; PIR Sensor: -20 C to 40 C
Approvals, Federal Communications Commission
FCC Part 15, Class B
Wireless Range
Open Range--With antenna exposed: 200 ft, With antenna coiled inside receiver: 50 ft; Typical Range--With antenna exposed: 100 ft, With antenna coiled inside receiver: 40 ft
Battery Life
Door Sensor: Two years (under normal usage); PIR Sensor: One year (under normal usage)
Operating Frequency
Receiver: 433.92 MHz; Door Sensor: 433.92 MHz
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