Domoticz

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-- operateRelay.lua
 
return { 
    on      =   {   timer          =    { "every 10 minutes" }}, 
                    
    logging =   {   level       =   domoticz.LOG_DEBUG,                                   
                    marker      =  "operateRelay" },
                    
    execute = function(dz)
        -- Modify values below this line ----------
        relaySwitch     = dz.devices("relaySwitch") -- Name of your relaySwitch within quotes or idx without quotes
        voltageSensor   = dz.devices("Licht accu")  -- Name of your voltageSensor within quotes or idx without quotes
        lowVoltage      = 23                        -- below this value the switch will be turned on
        highVoltage     = 23.5                      -- Above this value the switch will be turned off 
        hysteresisDelay = 10                        -- Delay to prevent too frequent on/off actions
        -- Modify values above this line ----------
        
        if relaySwitch.lastUpdate.minutesAgo > hysteresisDelay then
            if voltageSensor.voltage > highVoltage then
                relaySwitch.switchOff().checkFirst()
            elseif voltageSensor.voltage < lowVoltage then
                relaySwitch.switchOff().checkFirst()
            end    
        end
    end
}