# YoLink YS1603 Freezer Temperature Sensor Kit with Hub The YoLink YS1603 Freezer Temperature Sensor Kit pairs one temperature sensor with a hub for app-based monitoring and threshold alerts. Its LoRa connection and claimed long open-air range may help monitor locations beyond typical Wi-Fi reach, while the kit requires the hub for the stated setup. - [Original product page](https://best-deals.pro/product/yolink-ys1603-freezer-temperature-sensor-kit-hub) - [View offer](https://best-deals.pro/visit/yolink-ys1603-freezer-temperature-sensor-kit-hub) - Market: US - Language: en-US - Currency: USD - Brand: YoLink - Model: YS1603 - Price: 33.99 USD - Previous price: 43.99 USD - Discount: 23% - Price checked: 2026-11-12T11:12:29.046Z - Rating: 4.6 / 5 - Reviews: 687 Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store. ## At a glance - Hub and one sensor are identified as the two products in the kit, not two sensors. - The listing describes customizable high- and low-temperature thresholds with app, text or email notifications. - The sensor uses two AA batteries. The listing claims up to five years of continuous operation, depending on use and environmental conditions. - Alexa temperature queries and IFTTT applets are listed. Alexa routines are not supported. ## Pros - LoRa connectivity is intended for placements beyond Wi-Fi reach, with an advertised range of 2034 feet in open air. - App monitoring and configurable threshold alerts offer remote temperature awareness for a freezer or other monitored space. - Two AA batteries are stated as included, and the listing describes low-battery alerts through the app. ## Specifications ### Identity - Brand: YoLink - Model: YS1603 ### Temperature monitoring - Measurement range: -4°F to 122°F \(-20°C to 50°C\) - Accuracy, 32°F to 129°F: ±0.36°F \(32°F to 129°F\) - Accuracy, -20°F to 32°F: ±0.72°F \(-20°F to 32°F\) - Listed upper temperature range: 122 °F ### Connectivity and controls - Wireless connection listed: LoRa - Open-air range claim: 2034 feet ### Power and construction - Battery requirement: 2 AA batteries required. \(included\) - Listed material: Plastic - Listed color: white - Listed reusability: Reusable ### Display and compliance - Screen technology listed: Analog - Specification met: FCC ## Before you buy - The listing contains contradictory or inconsistent details: its title and kit contents specify one sensor plus a hub, while a detail field says “Detector,” and the model fields give YS1603 and YS1603+YS8017. It also lists an analog display although the main use described is app monitoring. Confirm the selected listing's exact kit and model before purchase. The claimed 2034-foot range is for open air, and battery life depends on use and conditions. ## In the box - YoLink hub (Included) - Temperature sensor (Included) - 2 AA batteries (Included) ## A good fit for - People who want remote alerts for a freezer, refrigerator or other temperature-monitored space. - Buyers who need a sensor connection beyond Wi-Fi reach and can use the included YoLink hub. - Existing YoLink users who want another temperature-monitoring point. ## Less suited to - Buyers seeking a two-sensor bundle. The stated kit is one sensor and one hub. - Buyers who need Alexa routines triggered by temperature, which the listing says are not supported. - Anyone who requires a stated temperature reading below -4°F or above 122°F. ## Customer feedback Customer feedback describes straightforward smartphone setup, useful freezer monitoring and alerts, and positive experiences with connectivity and perceived accuracy. These reports are relevant for buyers who want remote checks through the listed app, but they do not establish measurement performance or guarantee connectivity in a particular home. The overall rating distribution is mostly five-star, with a smaller one-star share, so experiences are not uniformly positive. - Positive themes: Customers report easy smartphone setup and useful temperature alerts. - Positive themes: The feedback summary describes positive experiences with connectivity and temperature monitoring. ## Frequently asked questions ### Does this kit include two sensors? No. The kit description says it includes one YoLink hub and one sensor, two items total. “2 Pack” refers to those two products, not two sensors. ### What temperature range does the listing specify? It states a measurement range of -4°F to 122°F \(-20°C to 50°C\). The listing also gives separate accuracy claims for stated temperature bands. ### How does the sensor send readings and alerts? The listed connection is LoRa, and the feature description says monitoring and threshold alerts are available through the YoLink app, with text and email options also described. ### Can it trigger Alexa routines? No. The listing says users can query Alexa for the temperature but that Alexa routine triggering is not supported. ## Alternative options - [WiFi Freezer Thermometer with Freezer Alarm, Screen Display, App Email Buzzer Alert...](https://best-deals.pro/visit/yolink-ys1603-freezer-temperature-sensor-kit-hub) - [WiFi Thermometer Freezer Alarm, Email Alert, App Notification, Data Record Export, ...](https://best-deals.pro/visit/yolink-ys1603-freezer-temperature-sensor-kit-hub) - [Govee WiFi Thermometer Hygrometer H5179 with App Notification Alert \| Humidity temperature sensor, portable. 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