Small size and weight of the transmitter allow to install it Double Sided Tape hanging it in the difficult to reach areas.
As the receiver you can use any walkie talkie device 400-470Mhz (not included in the delivery).
I for example use "Puxing PX2R UHF 400-470Mhz".
This device you can purchase here on Ebay (the price apx 40US$).
But the best thing for you will be to buy a ready-made set with this transmitter and a UHF receiver already configured for it.
Please click this link on the right.
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