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05g JHEMCU SP24S 24G ExpressLRS ELRS High Refresh Rate Low Latency Ultra small Long range RC Receiver for RC FPV Drone0 5g JHEMCU SP24S 2 4G ExpressLRS ELRS High Refresh Rate Low Latency Ultra small Long range RC Receiver for RC FPV DroneOVERVIEW The SP24S 2 4GHz ELRS series receiver is based on the open source architecture and program of ExpressLRS The receiver uses ESP8285 MCU so you can upgrade the firmware through WIFI As long as the receiver is powered on and the remote control is turned off you can find ExpressLRS after a while Connect to this hotspot through a computer or mobile phone The connection password is expresslrs and it will automatically enter the upgrade page If you don t have one you can manually visit 10 0 0 1 to upload the receiver firmware Of course you can upgrade the firmware with general flight controller and external USB TTL Because the ELRS receiver uses low latency and high refresh RF chips it is very suitable for FPV competitions and remote FPV At the same time these receivers have ultra light and ultra small sizes so they are very suitable for Tinywhoop Regarding the choice of receiver firmware our default shipment is DIY 2400 RX ESP8285 SX1280 The receiver firmware content of each manufacturer is basically the same but the name is different except BETAFPV which has different circuits Specifications Brand Name JHEMCUItem Name SP24S RC ReceiverModel SP24SWeight 0 5g without antenna Size 11 11 6 mm2 4G ISM typeESP8285 MCUSX1280IMLTRT RFFrequency range 2400 MHz To 2500 MHzMaximum receiving refresh rate 500HzMinimum receiving refresh rate
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