Extreme Temperature Sensor
(RMA-ET1-SEN)
AVTECH Software, Inc.
Page 2 of 5
AVTECH.com
Locate the tip of the thermocouple coil where you wish to measure temperature. For accurate
readings, this location must be within the minimum and maximum threshold
supported by the sensor: -328º F to 32º F (-200º C to 0º C).
Place the sensor ID box in a warmer zone, as it has an operating range
of -40º F to 185º F (-40º to 85º C). You may mount it on a wall by
removing the cover and inserting the included mounting screws
through the mounting holes or simply place it on a flat surface.
Step 2: Connect the sensor to Room Alert.
Your sensor comes with one end of the 25' speaker wire already attached. Note that the wire
is polarized and color-coded as shown below:
Copper
Positive (+)
Silver
Negative (-)
Follow these steps to attach the other end of the 25' speaker wire to the input ports on your
built-in or external Room Alert Analog Sensor Input port:
1.
Separate and strip the free ends of the speaker wire. Expose
about ¼" of wire.
2.
Insert the
silver
(-) wire into the RIGHT (-) contact of the
Analog Sensor Input port.
3.
Insert the
copper
(+) wire into the LEFT (+) contact of the
Analog Sensor Input port.
Early versions of the Room Alert 12E have this polarity reversed: LEFT = negative (-), and
RIGHT = positive (+). If you observe your voltage value flipping back and forth from “0” to
“5,” it’s likely that the speaker wires simply need to be inserted in the opposite contact.
Room Alert models 32W, 32E and 12E have built-in analog input ports; other models can
interface with analog sensors through AVTECH’s Temperature & Analog Sensor, which
connects to Room Alert’s Digital Port. For more information about AVTECH’s Temperature
& Analog Sensor, please see its Installation Note, visit
AVTECH.com
or contact a Product
Specialist.
Step 3: Connect to a power source.
Your Extreme Temperature Sensor comes with an 18V power adapter (100 – 240 VAC)
already attached. Plug the adapter into a power source.
Do not connect the analog inputs on AVTECH products or other electrical appliances
to live circuits of over 5 VDC.
Use only low-voltage 2-wire cable to connect dry contacts.
