4- remote controlled sockets with remote control (Eastney PO4)

Consists of 2- remote- controlled sockets [on/off], 2- remote- controlled sockets [on/off and dimmer function], 4- channel remote control, operating instructions. Used for many years to control multiple lamps on 2 sockets on/ off, never tried the 2 with dimmer function. Might need a new 12v battery.