Thumb Score: +14 Yosmart via Amazon has for Prime Members: YoLink Temperature/Humidity Sensor Kit w/ Hub + 2 Sensors on sale for $49.99 - 20% off when you 'clip' the coupon on the product page = $39.99. Shipping is free. $40 compare to $69.99 regular with 42% off Note: You must be logged in to clip coupons; coupons are typically for one-time use. Includes: YoLink Water Leak Detection Hub 2x YoLink Temperature/Humidity Sensor 4x AAA Batteries About this product: Monitor your temperature and humidity, like a fridge or freezer, a barn or bedroom, a chicken coop or a dog kennel, a plant nursery etc