not cheap, but thought this might be of interest :
WSX53A - £149.95+VAT ... detects all forms of precipitation (rain, snow, hail, sleet) ... discriminate between rain & snow ... two volt-free contacts ... activated in response to precipitation & snow-point temperature respectively ... post event delay can be applied to delay contact deactivation by 15, 30 and 45 minutes ...
WSX53A - £149.95+VAT ... detects all forms of precipitation (rain, snow, hail, sleet) ... discriminate between rain & snow ... two volt-free contacts ... activated in response to precipitation & snow-point temperature respectively ... post event delay can be applied to delay contact deactivation by 15, 30 and 45 minutes ...
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