Airtronics RX-472 FH4 Surface 4ch Rx - ESC Comm. for M12 This is the Airtronics RX-472 2.4GHz 4-Channel FH4T Super Response Receiver with Sanwa Synchronized Link (SSL) Support included.Features:Designed for Use with Artronics M12 and Sanwa Exzes-Z Transmitters and Sanwa Super Vortex Zero ESC Compatible with Airtronics Super Response Servos Small and Lightweight Supports Receiver Battery Fail Safe Monitoring Sanwa Synchronized Lik (SSL) Compatible Extremely Low Latency Time