WAVE Bluetooth display for tank bottle multi-valve for two

two Retrofit KIT for multi-valve SRG 488 consisting of

Hall Sensor 0.5 - 4.5V (RRD Remoute Readout Dial)
Socket wrench with 2 screws for replacement
Black WAVE transmitter box with 1 m cable length (without batteries)
Holder for WAVE box incl. Velcro