The BAPI BA/WT-TB-M304-4-BB is a Wireless 418 MHz Thermobuffer Transmitter with a 4" probe. Used for monitoring walk-in freezers or coolers' temperature. It features a watertight BAPI-Box Enclosure with NEMA 4 or IP66 rating.
A Wireless Thermobuffer transmitter that measures temperature through the 4" 304 stainless steel chamber. The measured temperature data is sent every 20 seconds to BAPI BA/RCV418-EZ Receiver at a 418 MHz radio frequency within 100 feet. The receiver will re-transmit the data to BA/ROM and/or BA/COM Output Modules for conversion into a Resistance, Voltage, or Current for the DDC controller.
Seal the chamber using an oil or a 50/50 glycol solution to approximate the temperature reaction of the refrigerated contents in the freezer or cooler. You can also purchase a BAPI BA/RPT49-EZ or BA/RPT49-EA-EZ Repeater to extend the transmission range up to 1000 ft.
Battery Capacity | 2.25 AH |
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Sensor | Built-in Thermistor |
Accuracy | +/- 36F (0.2C) |
Temperature Range | -40F to 185F (-40C to 85C) |
Radio Frequency | 418 MHz |
Transmit Power | 1.5 mW |
Transmit Time | 20 ms |
Modulation | Amplitude Modulation (AM) |
Battery Life | 8 years at 20 second transmit rate |
Supply Power | Two 3.6V Lithium Batteries |
Download Product Information:
Wireless Thermobuffer Freezer Transmitter 418 MHz System Datasheet
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