Features: Open source design, support customisation and secondary development to meet individual needs Low Delay technology, providing efficient and stable data transmission experience, receiving signal is more sensitive and stable. Lightweight, easy to carry and install, user-friendly Fast response speed, stable signal transmission, ensuring data accuracy. Highly quality materials, not easy to be damages by longlasting use. For researcher in the field of Internet of Thing, communication, etc. Professional and technical personnel Specifications: Item: ELRS NanoSE Receiver Frequency：2.4G Size:about 12.1x10.4mm/0.47x0.41in Chip:ESP8285 SX1281 Refreshes rate:25hz-500Hz voltage:5V Package Includes: 1PCS ELRS NanoSE Receiver note: Due to the different monitor and light effect, the actual color the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring difference due to manual measurement.