ExpressLRSFPV ELRS long-distance ES900TX high-frequency ES900RX receiving module ES900TX The ES900RX module is a set of long-distance 915MHz wireless transmission equipment developed and designed based on the open source software ExpressLRS. This module features ultra-long distance, stable operation and low latency. The module is compatible with most Opentx remote controllers, especially for TX16S and Jumper T12 T16 T18 series remote controllers, and is basically plug-and-play. We have specially customized a heat dissipation module for the transmitter module, and added a 2006 cooling fan to the new version of ES900TX, which can help the transmitter module to run stably under high power conditions. The fan is plug-and-play, and the fan automatically works when the transmitter module power is set to 250mw. The receiver module is very small and mini, weighing only 0.6 grams without the antenna, which is very suitable for all kinds of Whoop -country drones and Toothpick toothpick machines. Both the high-frequency module and the receiver module can choose 915MHz . We have flashed the program and tested them before leaving the factory. JR standard high-frequency shell 3D print download address http://.win/afah ES900TX high-frequency module: Dimensions: 55mm x 39mm x 11mm (high-frequency module only) Weight: 9.2g (high-frequency module only) Antenna terminal: SMA Input power: 5~13v, 5v~9v recommended Working frequency range: 915MHz Maximum output power: Less than 33dBm Material: Plastic colour: Black + Gray Specification:A Package Contents: 1 x ES900TX 915MHz Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.