The ISO9VOLTH from Lectrosonics allows you to operate a UH transmitter from an external power source. The unit converts 10-18VDC power into regulated 9VDC at the terminals in the transmitter's battery compartment. A modified battery cover exposes the connector for the external source, but also allows you to use regular dry cell batteries.
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Lectrosonics ISO9VOLT Overview
Lectrosonics ISO9VOLT Reviews
Wrked out just fine.
By Ronald
Rated 5 out of 5
Date: 2026-02-23
This lectrosonic battery eliminator is actually for a different style wireless transmitter. The transmitter on my body pack is an older style, but I was able to drill the necessary hole in the bottom retainer plate and it worked great. We now have a stationary wireless transmitter (and microphone) that we recently repurposed and placed out-of-reach. It is now AC powered and needs no battery.
Highly recommend these!
By Jeff
Rated 5 out of 5
Date: 2012-11-15
I put off buying these because of the price but now I wish I had purchased them a long time ago. For delivering audio from my audio mixer to the camera I use Lectrosonics 400 Transmitters and I was always checking to make sure the battery hadn't gotten low or died completely. And I was going through a number of 9V batteries every day. These have saved me a lot of money on batteries as well as giving me piece of mind never having to check the battery status of my transmitters.
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