Dear Sirs, We are looking for a custom made solution - a Low frequency and High power 0.5-1W transmitter : Preliminary specification: 1. High power -Transmitter 0.5-1W 2. (27mHz) or 33-900 kHZ ( we need to be able to connect our devices under the salt water up to 2 meters depth) 3. compatible with EV1527, RT1527, FP1527 protocols. 4. operational storage for a receiver and ability to work with several remotes (up to 4 remotes). 5. an coding option to pair different receivers (at least for 100000 variations) 6. A modulation option to avoid connection of other devices. 7. We don’t need plastic body shell, it will be designed by our side. 8. Compact assembly design. Potential order is about 4000 sets. If you re interested in this request please let us know if you produce a few prototypes for us. We would like to test a few samples ( at least 3). Please, name the price and lead time for the prototypes.