User's Guide
Wireless AC Circuit Identifier
Model RT32
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Introduction
Congratulations on your purchase of Extech’s Model RT32 (869MHz) Wireless AC Circuit Identifier.
The detector can identify live circuits and detect changes in light level with the wireless receiver. With
careful use, this detector will provide years of reliable service.
Meter Description
TRANSMITTER DESCRIPTION
1. Wire clamp slot
2. Wire Clamp release latch
3. Light sensor
4. Voltage/Light detect LED
5. Battery compartment
6. Power LED
7. Light setpoint button
8. Power/Mode select switch
9. External Probe Connector
RECEIVER DESCRIPTION
1. Detect LED (Amber)
2. Communication LED (Yellow)
3. Power/Mode
4. Power LED (Green)
5. Battery compartment
6. Pocket clip
7. Audio Buzzer
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Operation
Detecting Live Circuits (VOLTAGE method)
The RT32 can be directly clamped on installed building wiring and will detect the
voltage applied to the wiring.
1. Slide the transmitter power switch to the VOLTAGE position. The POWER
LED will switch on.
2. Slide the Receiver power switch to the ON position. The POWER LED and
the SIGNAL OK LED will switch ON.
3. Place the Romex
alternatively, connect the external voltage detector probe into the external
probe socket and then clamp the probe to any cable, extension cord or
appliance cord.
4. If the cable is “live” (voltage present), the VOLTAGE/LIGHT
amber LED on the transmitter will switch on and the
DETECT LED on the receiver will switch on.
5. If desired, switch the receiver power switch to the audio OFF
position
6. When the voltage is removed (by opening the splice or the
circuit breaker, for example), the Detect LEDs will switch
OFF and the detect beeper will switch OFF.
Note: Use of the External Probe overrides the setting of the Power/Mode Switch. The Lighting
method cannot be used while the External Probe is attached.
Detecting Live Circuits (LIGHTING method)
In situations where access to circuit wiring is limited, the RT32 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.
TM
/nm cable (AC wire) directly into the wire clamp slot or,
to disable the audible tone.
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Specifications
Transmitter Unit Receiver Unit
Indicators LED Audio Beeper, LED
Transmission Frequency 869MHz n/a
Transmission Distance Approx. 100m (328’) in an unobstructed field
Transmission Power +10dBm n/a
Alarm Status Visual Visual and audible
Power Supply Two (2) ‘AAA’ batteries Two (2) ‘AAA’ batteries
Battery Life 80 hours (approximately)
Operating Temperature -10 to 50°C (14 to 122°F)
Storage Temperature -30 to 60°C (-14 to 140°F)
90% RH from -10 to 30°C (32-86°F)
Operating Humidity
Storage Humidity 90% RH max.
Dimensions 101x61x38mm (4.0x2.4x1.5”) 114x30x26mm
Weight 0.23 kg (8.0 oz) – three (3) piece total
75% RH from 30 to 40°C (86-104°F)
45% RH from 40 to 50°C (104-122°F)
(4.5x1.17x 1.02”)
Maintenance
Battery Replacement
When the Power LED begins to dim, or the transmitter and receiver stop communicating, the
batteries may need to be replaced. Each unit uses two (2) ‘AAA’ batteries (MN2400 or equivalent).
The battery doors can be removed using a Philips screwdriver to loosen the attaching screw.
You, as the end user, are legally bound (EU Battery ordinance) to return all used
batteries, 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 © 2012 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
www.extech.com
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