3.5kw~6.5kw Electric Water Heater

Designed for pump-assisted instant electric water heaters, this customizable three-key PCBA supports 65–280 VAC input, 30–55°C control, pump pre-run and delayed shutdown, four-wire flow sensing, temperature memory, optional negative-ion synchronization, and fault protection.

Developed for instant electric water heaters, this customizable eight-key PCBA supports 85–280 VAC input, 3.5–5.5 kW power settings, 30–55°C control, flow sensing, preset temperatures, automatic parameter memory, rapid stabilization, and multiple protection functions.

Built for instant electric water heaters, this customizable PCBA supports 85–280 VAC input, 3.5–5.5 kW power settings, five-key touch control, 30–55°C adjustment, four-wire flow sensing, setting memory, intelligent constant-temperature control, and multiple protection functions.

HS-CT-8545D-6KEY-V1.8 is an instant electric water heater PCBA with 85–280 VAC input, six-key touch control, 30–55°C adjustment, 50K NTC sensing, flow activation, and E2–E5 safety diagnostics. SunSam provides hardware, firmware, prototyping, testing, and mass production for OEM/ODM projects.

HS-HX-8545-ALL is a 6-key remote-control instant electric water heater PCBA for smart shower and household hot-water appliances. AC 85–280 V input, 4–6 kW settings, six preset modes, flow sensing, parameter memory and protection functions support customized SUNSAM OEM/ODM projects.