I have two full RKE systems for sale, plus another PC4 & ES: Systems working good, and all modules have the latest firmware.
1. RKE+NET system (RKE, NET, 2x PC4, SL1. probes: Temp, pH, ORP)
--- extra cables (one super long cable), switch connection cables, misc cables
$350 OBO
2. RKE+NET system (RKE, NET, 2x PC4, SL1, probes: Temp, pH)
--- extra cables (two super long cables), switch connection cables
$325 OBO
3. PC4: $70 --- ES: $25
