Solis S1 WIFI + 4G Cellular Stick, With No SIM, 4 pin connection hot water tap All devices are factory pre-set

All devices are factory pre-set to correct operating parameters and must not be adjusted

A configurable disinfection routine raises cylinder temperature to a set point on a chosen day and time

and controls

22mm inlet group valve and automatic air vent are factory‑fitted for compliance and safety

Most UK UFH systems require NC actuators

Solis S1 WIFI + 4G Cellular Stick, With No SIM, 4 pin connection hot water tap All devices are factory pre-setThe Solis S1 WIFI + 4G Cellular Stick, With No SIM, 4 pin connection is a compact data logger dongle designed for Solis inverters, providing reliable WiFi and 4G connectivity for remote monitoring and management of solar PV systems. Product Description The Solis S1 W4G ST is an advanced plug and play data logger that enables seamless communication between Solis inverters and the Solis Cloud platform. It supports both WiFi and 4G networks for flexible