User manual

10 RHT35-en-GB_V1.0 04/17

Maintenance

Battery Replacement

The battery compartment is located on the back of the datalogger as shown in the Descriptions

section. When the battery symbol flashes on the display, replace the batteries promptly.

1. Using a large coin, rotate the battery compartment lid clockwise approximately one

quarter turn to open the compartment

2. Replace the two (2) CR2032 batteries with positive (+) side facing up

3. Replace the battery compartment lid and turn counterclockwise to secure it

4. Dispose of batteries in accordance with country, state, and local regulations

Never dispose of used batteries or rechargeable batteries in household waste.

As consumers, users are legally required to take used batteries to appropriate

collection sites, the retail store where the batteries were purchased, or wherever

batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to

take end-of-life devices to a designated collection point for the disposal of electrical and

electronic equipment.

Battery Status Check

To check the approximate number of days of battery life remaining, short press the MARK button.

The display will show the number of days and the ‘d’ for days (XXd).

Cleaning

Wipe the datalogger with a damp cloth, do not use solvents or abrasives as these may damage

the datalogger finish and display lens.

Error Display Codes

ERROR CAUSE SOLUTION

E02 Measured value below specified range Operate in the specified range

E03 Measured value above specified range Operate in the specified range

E04 Temperature error Contact Extech for service

E11 Humidity calibration failed Contact Extech for service

E31 Microprocessor failed Contact Extech for service

E33 Humidity measurement error Contact Extech for service

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