Online Spare Parts ReStore › Lufft-WS501 Lufft-WS501 $3,815.74 WS501-UMB Smart Weather Sensor w/ CMP3 Irradiance | All-in-one sensors (Air temp, RH, BP, Wind S&D) WS501-UMB Smart Weather Sensor w/ CMP3 Irradiance | All-in-one sensors (Air temp, RH, BP, Wind S&D) Add To Cart Added! You Might Also Like IMT Solar-Tm-RS485-MB Lufft-WS600 Lufft-WS100 Hukseflux-SR05-D1A3-10 Hukseflux-SR30-M2-D1-05