on the bt-1500 infrared thermometer what does a 'lo' message mean? I get it when I try to read the temp in a glass furnace that is running way over 2000F
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Hi @sunriseglass I believe you are getting your BTs mixed up. This is a BTMETER brand, not BT.
As @VeteranISPUser has said, nothing to do with BT
Non-contact Digital Infrared Thermometer BT-1500 D:S=30:1 High Temperature Gun Thermometer -58℉~2732℉ (-50℃~1500℃) Infrared Thermometer Gun with Backlight