Crestron CHV-RTHS – Remote Temperature and Relative Humidity Sensor

Product Overview

The Crestron CHV-RTHS is a compact remote sensor that measures both room temperature and relative humidity, reporting both values to a Crestron Horizon Series HVAC control system over a 2-wire twisted-pair cable. It is designed for flush mounting in drywall through a 1-inch diameter hole, sitting nearly flush with the wall surface for a discreet installation profile. The sensor suits applications where a separate, unobtrusive sensing point is needed away from the main thermostat location.

Product Description

Temperature and humidity sensing accuracy in HVAC control directly affects occupant comfort and energy performance. The CHV-RTHS provides continuous reporting of both parameters — temperature across a wide indoor and outdoor range, and relative humidity from 0 to 100% — allowing the Crestron control system to apply setback strategies, dehumidification control, and multi-zone averaging. The sensor connects via a 22 AWG 2-wire twisted-pair pigtail lead with a maximum cable run of 500 ft using CAT5 cable. The circular face (1.50 in. diameter) and shallow depth (2.22 in.) minimize visual impact in finished spaces.

Key Features

• Measures both room temperature and relative humidity in a single unit
• 2-wire twisted-pair connection; up to 500 ft cable run via CAT5
• Indoor temperature range: 0°–110°F; outdoor range: -30°–120°F
• Relative humidity range: 0–100% RH with ±5% tolerance
• Circular drywall flush-mount; 1 in. diameter hole; protrudes ~1/8 in. from wall surface
• 22 AWG 2-wire pigtail lead, 10 in. factory installed
• Compatible with Crestron Horizon HVAC control system

Typical Applications

• Remote sensing in rooms where the main thermostat is located in an adjacent space
• Return air plenums or ductwork for supply air temperature monitoring
• Outdoor ambient temperature and humidity monitoring for HVAC optimization
• Multi-zone residential systems requiring per-room temperature and humidity data
• Spaces where a discreet, flush-mount sensor is required by the design specification

Technical Specifications

• Face diameter: 1.50 in. (39 mm)
• Depth: 2.22 in. (57 mm); protrudes ~1/8 in. from finished wall
• Connection: 2-wire twisted-pair pigtail, 22 AWG, 10 in. factory lead
• Max cable run: 500 ft via CAT5
• Indoor temperature range: 0°–110°F
• Outdoor temperature range: -30°–120°F
• Humidity range: 0–100% RH; ±5% accuracy
• Mounting: Drywall flush mount in 1 in. diameter hole

Frequently Asked Questions

Can the CHV-RTHS be used outdoors?

The CHV-RTHS supports an outdoor temperature measurement range of -30° to 120°F, but the sensor housing is not rated for direct exposure to moisture or weather. For outdoor ambient sensing, the sensor should be mounted in a sheltered location such as a shaded eave or ventilated outdoor enclosure protected from rain and direct sunlight.

Does the CHV-RTHS work without a Crestron HVAC system?

No. The CHV-RTHS is designed specifically for the Crestron Horizon Series HVAC control system and reports over a dedicated 2-wire connection to a Crestron control processor. It does not support BACnet, Modbus, or other third-party building automation protocols.