7 days temperature recorder for deep freezer logger

Model Number: 7 days temperature recorder Brand Name: Herald Key Specifications/Special Features: Characteristics of the product function:The product mainly applies to blood bank refrigerators, ultra low temperature freezers and other medical equipment that requires temperature recording over time.The record chart paper is circular. Reading of temperature is simple and reliable. The operation of the unit is rather straightforward.The unit is designed to operate with a precise microchip to ensure an accurate and reliable recording of time.The recorder is also designed with a special circuitry to protect the operation of the motor from external electronic disturbance.Ambient conditions
Please perform operation under the following conditions in order to ensure accuracy.

Indoor use
Elevation above sea level: ≤ 2,000m
Ambient temperature within -10°C - 50°C
Ambient humidity within 0% - 90% RH
The fluctuation of voltage of the main power supply without exceeding the rated voltage
Technical parameters

Main parameters

a) Range of test temperature:

-40°C - +30°C, resolution: 1°C

-115°C - +50°C, resolution: 5°C

-200°C - 0°C, resolution: 5°C

b) Temperature and humidity of working environment: -10°C - 50°C and 0 - 90% RH

c) Recording time cycle: 7 days or 24 hours

d) Working power supply: AC 100V - 240V and 50Hz or 60Hz

e) Rated power: ≤8W

f) Installation method: mosaic installation on the wall

g) Back-up battery: lithium battery (when the battery is fully charged, it can run the recorder for at least 24 hours)