{"product_id":"shelly-shelly-plus-add-on","title":"Shelly Plus Add-On For Shelly Gen3 And Gen4 Devices","description":"\u003ch2\u003eShelly Plus Add-On For Shelly Gen3 And Gen4 Devices\u003c\/h2\u003e\u003cp\u003eThe Shelly Plus Add-On is a small galvanically isolated expansion board that plugs into compatible Shelly Plus, Gen3, and Gen4 devices to add extra sensor and I\/O capability beyond the host device's built-in inputs. It supports up to five DS18B20 temperature probes (via 1-Wire), or a single DHT22, plus NTC thermistors, photoresistors, PIR motion sensors, soil moisture sensors, and ultrasonic proximity sensors, making it useful for temperature-based automations like boiler control, freeze protection, or greenhouse monitoring.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSHELLY PLUS ADD-ON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShelly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmart Home\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKey Specs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompatible with: Shelly Plus, Gen3, and Gen4 devices (device-dependent); Sensor support: up to 5x DS18B20 (1-Wire), 1x DHT22, NTC 10kΩ β=4000K, photoresistor, PIR, soil moisture, ultrasonic proximity; I\/O: 1 analog input (0-10V), 1 digital input, reference voltage output; Power: 3.3V DC from host device, \u0026lt;0.5W consumption without sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Shelly","offers":[{"title":"Default Title","offer_id":49954611101925,"sku":"SHELLY PLUS ADD-ON","price":479.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/0010\/6725\/files\/Shelly-Plus-AddOn-main-image.png?v=1783409625","url":"https:\/\/guardsondutyshop.co.za\/products\/shelly-shelly-plus-add-on","provider":"Guards On Duty Shop \u0026 Security Guards ","version":"1.0","type":"link"}