COMET T3218 – 0-10V Indoor Transmitter for Temperature and Humidity

COMET T3218 – 0–10 V Indoor Transmitter for Temperature –10 to +50 °C (±0.5 °C), Humidity 5–95 %RH (±2.5 %), Dew Point, for KU68 Wall Boxes 

The COMET T3218 is an elegant and precise 0–10 V indoor temperature and humidity transmitter – specially designed for installation in standard KU68 flush‑mount boxes (commonly used for switches and sockets). Ideal for modern building automation, HVAC systems (heating, ventilation, air conditioning), indoor climate control, offices, hotels, schools, hospitals, or residential buildings, where unobtrusive, flush‑mounted, and highly accurate climate measurement is required. The transmitter fits perfectly into standard flush‑mount boxes, making it the ideal alternative to conventional room climate sensors – with an analog 0–10 V output for direct connection to controllers, PLCs, BMS systems, or actuators.

The internal temperature sensor measures from –10 to +50 °C (±0.5 °C) and humidity from 5 to 95 %RH (±2.5 %RH). The dew point is automatically calculated (±1.6 °C at T < 25 °C and RH > 30 %). The large dual‑line LCD displays current values and can be switched off if desired – ideal for representative rooms. The output is freely scalable – you can define via PC the measuring range and which parameter (T, RH, or dew point) is transmitted. The slim, stylish housing (88 × 106 × 33 mm) integrates harmoniously into any interior and is designed for indoor use only (IP20). Power supply 15–30 V DC – easily powered via an existing HVAC supply or central power unit.

The transmitter is maintenance‑free, long‑term stable, and available with a traceable calibration certificate (in accordance with EN ISO/IEC 17025) – top‑level quality for demanding indoor applications. The computer‑aided design ensures long‑term stability and error indication. Installation takes just a few minutes: insert the transmitter into the KU68 wall box, connect power and 0–10 V wiring, mount the cover frame – done. No external probe required – all in one device for maximum reliability and minimal error sources.

Why the COMET T3218 is the professional indoor transmitter with 0–10 V output:

• Perfect for KU68 flush‑mount boxes – flush and discreet installation
• 0–10 V output freely scalable – for controllers and PLC inputs
• High precision – Temp. ±0.5 °C | Humidity ±2.5 %RH
• Large dual‑line LCD – can be switched off, current values visible at a glance
• Dew point integrated – automatic calculation
• IP20 and elegant design – ideal for representative indoor spaces
• Wide power supply range – 15–30 V DC
• Long‑term stable and maintenance‑free – calibration certificate included

Technical data T3218:

• Temperature range: –10 to +50 °C (±0.5 °C)
• Humidity: 5 to 95 %RH (±2.5 %RH)
• Dew point: –60 to +80 °C (±1.6 °C at T < 25 °C and RH > 30 %)
• Resolution: 0.1 °C / 0.1 %RH
• Output: 0–10 V
• Power supply: 15–30 V DC
• Operating temperature: –10 to +50 °C
• Protection rating: IP20
• Dimensions: 88 × 106 × 33 mm
• Weight: approx. 150 g
• Warranty: 3 years

Perfect for:

• Building automation and BMS systems
• Offices, hotels, and conference rooms
• Schools, kindergartens, and lecture halls
• Hospitals and care facilities
• Residential buildings and smart‑home applications
• 0–10 V connection to controllers and actuators
• Demand‑based indoor climate control
• Integration into existing 0–10 V systems

Installation and commissioning – done in minutes

Insert the transmitter into the KU68 flush‑mount box, connect power (15–30 V DC) and 0–10 V wiring, mount the cover frame – finished! Configure the output via PC (COMET software) for measuring range and output value. No calibration required when replacing the device.

Summary:

• Temperature and humidity transmitter
• Designed for indoor use
• For high‑end applications in building energy management and HVAC systems
• Easy installation in standard KU68 flush‑mount boxes for household switches and sockets

Package contents:

• T3218
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration