User's Guide

Hygro-Thermometer Clock

Model 445702

H y g r o – T h e r m o m e t e r C l o c k

Introduction

Congratulations on your purchase of the Extech 445702 Hygro-Thermometer Clock. This instrument displays Time (12/24 hour clock),

Temperature (C or F), and Relative Humidity % simultaneously. The housing can be wall mounted or placed on a table-top using the built-in tilt stand. Features include MIN/MAX displays and programmable Alarm Clock. Careful use of this device will provide years of reliable service.

Specifications

Display

Ranges

Resolution

Accuracy

Power supply

Low Battery

Dimensions

Weight

Three LCD views for Time, Temperature, & Relative Humidity

Temperature: -10 to 60 o C (14 to 140 o F); Relative Humidity: 10 to 85%

Temperature: 0.1

o C/F; Humidity: 1%

Humidity: ± 6% in the 25 to 80% range & from 0 to 50 o C (32 to 122 o F)

Temperature: ± 1 o C from -10 to 50 o C and ± 1.8

o F from 14 to 122 o F

One (1) ‘AAA’ 1.5V Battery

Battery icon appears on the lower LCD when the battery is to be replaced

109 x 71 x 20mm (4.3 x 2.8 x 0.8")

Approx. 113g (4 oz.) with battery

Description

10.

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Clock display

Temperature display

Humidity display

Temp/Humidity Sensor

MAX / MIN button

RESET / AL (Alarm) button

CLOCK button

ADVANCE button

Alarm on-off switch

Alarm speaker

Tilt Stand

Battery compartment

Temperature units switch

Wall mount

Operation

Getting Started

1.

Open the battery compartment by sliding the battery compartment cover off in the direction of the arrow (rear of meter). Remove the battery safety strip. The displays should switch on. If the displays do not switch on, replace the battery. Replace the battery compartment cover.

2.

Remove the clear protective decal from the meter’s displays.

Selecting o C/ o F units of measure and the 12/24 clock modes

Use the o C/ o F slide switch on the back of the meter to select the desired temperature unit of measure. When the instrument is programmed for o F temperature operation, the clock will be in the 12-hour mode. When the instrument is programmed for o C temperature operation, the clock will be in the 24-hour (military time) mode.

MAX-MIN Record and Recall Operation

1.

Press MAX/MIN. The highest readings recorded since the Reset button was pressed appear in the display.

2.

Press the MAX/MIN button again to display the lowest values since the Reset button was last pressed.

3.

Press the RESET button while in the MAX-MIN display to clear the memory and start recording new MAX-MIN values.

4.

Press the MAX/MIN button again to return to normal display operation.

Setting the Clock

1.

Press and hold the CLOCK button until the hour digits begin to flash

2.

Use the ADVANCE button to set the hour

3.

Press the CLOCK button again; the minutes digits will begin to flash

4.

Use the ADVANCE button to set the minutes

5.

Press the CLOCK button to exit the time setting mode

Setting the Alarm Clock

1.

Press the RESET/AL button. The CLK ALARM icon appears on the lowest LCD display and the hours digits will flash.

2.

Press the AL/ON OFF button on the rear of the instrument. The alarm BELL icon will appear on the top LCD display. Press the

AL/ON OFF button again if you wish to disable the alarm (alarm bell icon will switch off).

3.

Use the ADVANCE button to select the alarm hour.

4.

Press the RESET/AL button again; the minutes digits will flash.

5.

Use the ADVANCE button to select the alarm minutes.

6.

Press the RESET/AL button to exit. The CHK ALARM icon will switch off and the bell icon will remain on.

7.

When the clock time equals the alarm time, the buzzer will sound for 1 minute.

8.

To silence the buzzer, press any button on the instrument.

You, as the end user, are legally bound (Battery ordinance) to return all used batteries and accumulators; disposal in the household garbage is prohibited!

You can hand over your used batteries / accumulators at collection points in your community or wherever batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle

Copyright © 2009 Extech Instruments Corporation.

All rights reserved including the right of reproduction in whole or in part in any form.

445702 V3.1 7/09