KAPPA Telemetry Receiver Module Shield for Arduino The KAPPAR-ARD Module Shield serves as an interface between an Arduino processor board and the supplied KAPPA-T868 radio telemetry receiver module. KAPPA-T868 module RF Carrier Frequency: 868.5MHz ISM Band RF Power Output: 13dBm Receiver Sensitivity: -121dBm @ 19200bps Range: up to 500m (line of sight) Host communication: serial UART with CTS/RTS flow control