Manufacturer: Thomas Scientific
Brand: Thomas
Model: 4381
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Traceable radio-signal remote humidity meter/thermometer receives a radio signal from the remote wireless sensors. It eliminates the cable. Place the main unit at your desk or bench. Place the remote sensor module in labs, ducts, and storage facilities-even outdoors. Remote sensor sends humidity and temperature signals to the main digital display. Transmits on a frequency of 433 MHz Range is 65 to 100 feet, depending on the location or number of walls. Relative humidity range is 25 to 90 percent with a resolution of 1 percent and an accuracy of +/-2 percent RH mid-range to +/-4 percent RH elsewhere. Switchable thermometer range is -4 to 140 degree F with a resolution of 0.1 degree and an accuracy of +/-1 degree C. To assure accuracy an individually serial-numbered Traceable Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Main unit can receive and display data from up to three different remote sensor modules. Data is transmitted every 30 seconds. Display’s trend indicators show if humidity and temperature are rising or falling. Minimum and maximum memory display allows monitoring of conditions over short or long periods, including overnight or weekends. An alarm may be set in increments of 1 percent RH and 1 degree . The alarm sounds when the humidity or temperature exceeds the high and low set points. Jumbo digits (1-3/8-inches-high) may be read from 25 feet. Cases are high-impact, chemical-resistant ABS plastic. Furnished with a flip-open stand, wall brackets, and Velcro to attach to any surface. Batteries operate continuously for eight months. Supplied complete with Traceable Certificate, one main unit (4.25" x 4.5" x 0.75", weight is 6 ounces), Remote sensor measures 2-1/3" width x 3.5" height by 0.75" thick weight is 3 ounces), internal humidity sensor, internal temperature sensor, and alkaline batteries.
