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Key Features
- Passive Infrared Detection
- 9V Alkaline Battery-Powered
- Detection Up to 50' Long and 17' Wide
- Up to 2000' Transmission Range
The TD-20U Indoor/Outdoor Sensor Transmitter from Optex offers two selectable detection patterns, a 17' fan pattern or a 50' beam pattern. The sensor uses PIR to detect motion, and once motion is detected it sends a signal back to the RC-20U Chime Box Receiver using RF signals. The device is powered by a standard 9V battery (available separately) which can last for approximately 2 years when the sensor is triggered about 250 times a day. There is a red LED that indicates when the sensor has detected motion and when the battery is low. Up to nine TD-20U units can be added to one RC-20U Receiver, enabling you to set up a full perimeter around your property.
More DetailsSee any errors on this page?
Does the transmitter come with a receiver or do I ...
Does the transmitter come with a receiver or do I need to order the receiver separately?
This is the transmitter only. You can search on our website for "Optex wireless 2000" and the kit will come up.
Date published: 2021-06-07
question
Can I get an alert on my smart phone?
No this unit will not connect to your smartphone.
Date published: 2021-12-08
HOW TO REPLACE 9VOLT BATTERY ?
HOW TO REPLACE 9VOLT BATTERY ?
Using a flat head screw driver you push down on the section that the sticker that says Push points to and separate the casing from the sensor. Take out the old 9V battery and replace.
Date published: 2021-10-18
question
How do you choose between Fan and Beam?
You just twist the sensor unit 90 degrees
Date published: 2020-06-04
question
is the td-20u compatible with my old wireless 2000?
Yes
Date published: 2020-06-15
question
will this work as a replacement with a optex wireless 1000 chime system?
yes it will work
Date published: 2018-08-24