DC 12V ASK/OOK Modulation Mode 433MHz PCB Panel TDL-9907 Transmitter Module
The seller was very responsive to my questions, but unable to provide a data sheet.<br /><br />I bought four of these. Three were shipped in an over-sized box. One was shipped in a padded envelope. IMO- *ALL* were damaged prior to packing. All had bent pins. One had a broken circuit board. Two had squished tuning coils.<br /><br />The only one I bothered to try testing did not power up at 3 volts. It did  power up at 4.5 volts.