They are compatible with RX8, RX18, RX23, RX43, RX57, "XH" and "2501". The difference is the shape of the 7PIN cable socket. 4,RX23=RX18=RX7,The three can replace each other.
Operation Mode: Automatic. Manufacturer Part Number: weelyerx23a. Manufacturer Minimum Age (MONTHS): 24.00. Supported Battery Types: 12V Battery. Power Source: Battery Powered. Number of Players: 1.