High- and low-temperature alarm sets in 1° increments. If the temperature rises above or falls below the set points, the alarm sounds. The alarm on Nos. 91825, 191267 and 191268 continues up to 12 hours, even if temperature returns to normal range. Traceable certificate (included) indicates traceability to standards provided by NIST. Thermometers include one battery, the certificate and high-impact, chemical-resistant ABS plastic case. Temperature range: –58° to 158°F (–50° to 70°C). Weigh 4 oz.
Traceable Refrigerator / Freezer Thermometers (Nos. 91825, 191267 and 191268) have a 1° resolution and a triple display that simultaneously shows the current, high and low temperatures. No. 191267 includes a 5/16"-dia. x 3/4"L temperature probe. No. 191268 includes a 5mL vaccine bottle that mimics vaccine temperature and fits in vaccine tray.
Traceable Refrigerator / Freezer Plus Thermometers (Nos. 91840, 191269 and 191270) have a 0.1° resolution. Display minimum, maximum and current temperatures simultaneously. Minimum and maximum monitors high and low readings overnight, on weekends or for any time period. No. 91840 is sealed in a bottle of nontoxic glycol, eliminating concerns about incidental contact with food or drinking water. No. 191269 has the same features as No. 91840, and includes a 5mL round bottle that mimics vaccine temperature and fits in vaccine tray. No. 191270 does not include a bottle probe. The supplied probe measures 3/16" diameter x 3/4"L with a 10' cable.