HVAC/R Sensors
Temperature Sensors

Humidity Sensors
Pressure Sensors
Air Quality Sensors
HVAC Sensor Accessories
Sensor Specifications





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Tel: +1-608-735-4800
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Echelon® Compatible "L-Combo" Room Units
Temperature/Humidity Combination Sensors

Low Profile Enclosure with LCD Readout
2% RH Accuracy
°C or °F Operation (user selectable)
User Adjustable Toggle Rate Between Temperature and Humidity
Full-range Temperature Compensation of RH Signal
Onboard Neuron® 3120® Chip
Optional Setpoint Adjustment and Occupancy Override
Standard 4-Wire Termination
Two Year Warranty



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   BAPI’s Echelon® compatible “L-Combo” Room Unit features measurement and display of local temperature and relative humidity, as well as display of outdoor temperature and outdoor humidity – all in one aesthetically-pleasing package. Additional options include Temperature Setpoint, Humidity Setpoint and Local Override. An onboard Neuron® chip allows connection directly to a LonWorks® network using star, bus, or loop topology. The LCD can toggle between temperature and humidity at a user adjustable rate, and the user can select °C or °F. In addition, the BAPI “L-Combo” saves time and money by allowing for field replacement of humidity elements without the need for ANY recalibration.

— L-COMBO SENSOR DOCUMENTS AND RESOURCES —

Resource Files for L-Combo Unit (combination temperature and humidity):
External Interface File (XIF), Neuron® Executable File (NXE) and/or Application Binary File (APB)
(These files are for units purchased after 09-08-06 [unit rev # 090806]. For the resources files of units purchased before 09-08-06, please contact a BAPI representative.)

Resource Files for L-Temp Unit (temperature only):
External Interface File (XIF), Neuron® Executable File (NXE) and/or Application Binary File (APB)
(These files are for units purchased after 09-08-06 [unit rev # 090806]. For the resources files of units purchased before 09-08-06, please contact a BAPI representative.)

Installation and Operation Sheets (PDF)

Echelon compatible Temperature Only ("L-Temp") Units
BAPI also offers an Echelon® compatible Temperature Only Room Unit called an “L-Temp”. This unit has all the features of the “L-Combo” unit without the humidity sensor.

The “L-Combo” were designed following the LonMark® Interoperability Guidelines, and incorporates standard configuration property types (SCPT). A complete SNVT/SCPT list with definitions is available upon request.
Echelon®, LonWorks®, Neuron®, and 3120® are trademarks of Echelon Corporation registered in the United States and other countries. LonMark® is a trademark of the LonMark Interoperability Association registered in the United States and other countries




BAPI has help when you need it. Check out our library of Application Notes.

VC75 (AC to DC Voltage Converter)
BAPI recommends using 12-15 VDC to power the “L-Temp” and "L-Combo" room sensors. With its compact size and rugged design, BAPI’s VC75 is the perfect AC to DC converter. Besides the 75 mA model, BAPI also offers 100 mA and 350 mA models, all of which are snaptrack mountable.
Why does BAPI recommend using DC vs AC power on sensors?

Rectangular Adaptor Plate (for retrofits)
The BAPI Adaptor Plate is designed for locations where a larger Room Unit (or sensor) has been previously mounted. The Adaptor Plate is made of flame retardant ABS plastic, and is available in four colors to match any BAPI enclosure. The Adaptor Plate measures 7” x 5.25” and can be mounted in a vertical or horizontal configuration.


L-Combo Unit with Setpoint & Overrid
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L-Combo Unit