Sonoff 24VDC Wifi Switch Integration for Compool LX3400 Pool Pump Control Panel

The discussion addresses integrating a Sonoff low voltage WiFi switch into an existing Compool LX3400 pool pump control panel to enable remote operation. The original setup uses a 230VAC supply feeding a DPST relay that powers the motor, with the relay coil energized by a 24VDC supply controlled via a push button. The proposed modification involves wiring the Sonoff WiFi switch in series with the relay coil circuit, replacing manual push button control with remote activation while keeping the push button engaged continuously. Key considerations include verifying the WiFi switch's current rating to handle the relay coil load and adding a flyback diode across the coil to suppress voltage spikes when switching off. Further inquiry confirms that wiring the WiFi switch in parallel with a new local on/off switch is feasible, as both are simple open/closed contacts, allowing either switch to activate the relay without electrical conflict. Alternative suggestions include using RF Solutions' mains voltage switching modules for simpler remote control. The preference remains to operate on the low voltage side for safety and ease of integration.
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