RT30 V2.0 11/08

4

Support line (781) 890-7440

Technical Support: Extension 200; E-mail: support@extech.com

Repair & Returns: Extension 210; E-mail: repair@extech.com

Product specifications subject to change without notice

For the latest version of this User Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451

Detecting Live Circuits (LIGHTING method)

In situations where access to circuit wiring is limited,

the RT30 can also detect room lighting changes (ON

to OFF).

1.

Slide the transmitter power switch to the LIGHT

position. The POWER LED will switch on.

2.

Slide the Receiver power switch to the ON

position. The POWER LED will switch on.

3.

Cover the Light Sensor on the transmitter and

press the Light Setpoint button.

4.

Expose the Light Sensor to the light source.

The VOLTAGE/LIGHT LED on the transmitter and the DETECT LED on the

receiver will switch on

5.

When the lights are turned off the VOLTAGE/LIGHT LED on the transmitter

and the DETECT LED on the receiver will switch off, indicating the light has

been switched off and power has been removed.

Note: Before use, always test the light on/off operation for proper sensitivity and

detection.