The RF Unit is a RF wireless radio frequency receiver, using a SYN531R radio frequency receiver, its working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers, built-in PCB antenna, stable receiving signal distance up to 10M, and its typical receiving sensitivity is -109dBm. The compact housing design can be embedded in a variety of radio frequency remote control applications. Features * Operating frequency: 433.92MHz * -109dBm high sensitivity, receiving rate 1Kbps (ASK modulation) * PCB antenna * Excellent selectivity and noise suppression Package Contents * 1x RF UNIT Unit * 1x HY2.0-4P Cable Specifications Resources Parameter Receiver IC SYN531R Working current 8mA Stable communication distance 10M Typical receiving sensitivity -109dBm Antenna type PCB antenna Net weight 6g Gross weight 21g Product Size 48 x 24 x 8mm Package Size 67 x 53 x 12mm Resources * Documents https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2023-03-07 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2023-12-27 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2024-09-19 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2024-11-29 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2024-11-30 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2025-08-05 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2025-11-28 https://elecena.pl/product/22723858/m5stack-rf-unit-433mhz-receiver-syn513r 2025-11-29