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BAPI-Stat “Quantum Slim” Wireless Room 

Temperature Transmitter

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI  54631 USA

Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com

Specifications subject to change without notice.

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 Installation & Operations

39907_ins_wireless_QuantumSlim

rev. 02/07/18

Overview and Identification

Fig. 1:  

BAPI-Stat “Quantum Slim” Room Transmitter and Hanging Bracket and Remote Sensors

Associated Gateway/Receiver

The Gateway receives the data from transmitters up to 275 feet away, and provides the data 

to the BAS via multiple communication options (TCP/IP, JSON, BACnet IP). The Gateway also 

sends a confirmation signal to each transmitter upon a successful reception of data, allowing 

the transmitter to release the data that it has stored in memory so that no data is lost during 

a signal interruption. Operation of the Gateway is described in the 

Gateway 

instruction sheet 

(39021_RCV_900_BACnet.pdf)

Fig. 2: 

Gateway/Receiver

External Remote 

Probe Sensor 

External Hanging 

Thermobuffer Sensor 

BAPI-Stat “Quantum Slim” 

The BAPI-Stat “Quantum Slim” Wireless Temperature Transmitter is designed to monitor temperature inside 

refrigerator and freezer cases. The unit mounts on the outside of freezer units and can be mounted either inside or 

outside of refrigerator units. It is available with an internal or an external sensor.
The external sensor’s ribbon cable can easily fit between the door seal or through hole with FEP cable without affecting 

appliance efficiency. The temperature is then transmitted to the receiver with a measurement range of -40 to 185˚F 

(-40 to 85˚C). The unit has an estimated battery life of 5 years with the default transmit rate of once every 5 minutes.
The unit has an estimated battery life of 5 years with the default transmit rate of once every 5 minutes. The transmitted 

temperature is picked up by a Receiver/Gateway and supplied directly to the BAS via multiple communication options 

(TCP/IP, JSON, BACnet IP). The transmitter stores all data in memory until it receives a successful reception signal 

from the Receiver/Gateway, so that no data is lost during a signal interruption. Transmissions can also be triggered 

by a temperature change with a user-adjustable threshold. The 902 MHz signal is “frequency agile” for maximum 

reliability.

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