# LoRaWAN sensors selection — ManThink > Temperature, humidity, leaks and air quality—or existing current, voltage and switch signals. Find the right device for your measurements and input interfaces. Canonical: https://www.manthink.cn/en/products/sensors/ SENSE / MANTHINK PRODUCTS Temperature, humidity, leaks and air quality—or existing current, voltage and switch signals. Find the right device for your measurements and input interfaces. [Compare key specifications ↓](https://www.manthink.cn/en/products/sensors/#comparison) [![KS31 Four-channel analog collector — product image](https://www.manthink.cn/assets/ks31.png) KS31](https://www.manthink.cn/en/products/sensors/ks31/) [![KS52 Temperature, humidity & leak sensor — product image](https://www.manthink.cn/assets/ks52.png) KS52](https://www.manthink.cn/en/products/sensors/ks52/) [![KS61 86-box indoor environment monitor — product image](https://www.manthink.cn/assets/ks61.png) KS61](https://www.manthink.cn/en/products/sensors/ks61/) FEATURED SENSOR / KS52 ## Track temperature and humidity. Detect water leaks. KS52 LoRaWAN temperature, humidity and water-leak sensor. Monitor conditions and water leaks together, wirelessly. Temperature / Humidity Spot / Rope leak detection IP65 [Discover KS52 ↗](https://www.manthink.cn/en/products/sensors/ks52/) [Visit the official store ↗](https://manthink.taobao.com/) Featured configuration includes a leak probe; choose spot or rope probes to suit the site. ![KS52 Temperature/humidity sensor with spot and rope leak-probe configurations](https://www.manthink.cn/assets/ks52.png) **°C** Temperature **%RH** Relative humidity **Water leaks** Spot / Rope ## Choose by signal and measurement 6 products Four-channel analog collector [KS31](https://www.manthink.cn/en/products/sensors/ks31/) [![KS31 Four-channel analog collector — product image](https://www.manthink.cn/assets/ks31.png)](https://www.manthink.cn/en/products/sensors/ks31/) ### [Turn existing current and voltage signals into wireless data.](https://www.manthink.cn/en/products/sensors/ks31/) - **Input signal**: 4–20 mA or 0–10 V - **Channels**: 4 channels - **Power options**: 10800 mAh battery / DC 5–24 V, by model - **Ingress protection**: IP65 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks31/) Six-channel dry-contact collector [KS32](https://www.manthink.cn/en/products/sensors/ks32/) [![KS32 Six-channel dry-contact collector — product image](https://www.manthink.cn/assets/ks32.png)](https://www.manthink.cn/en/products/sensors/ks32/) ### [Track switch states and event counts wirelessly.](https://www.manthink.cn/en/products/sensors/ks32/) - **Input signal**: Dry-contact DI - **Channels**: 6 channels - **Power supply**: 10800 mAh Li-SOCl₂ battery - **Ingress protection**: IP65 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks32/) Wireless water-leak sensor [KS51](https://www.manthink.cn/en/products/sensors/ks51/) [![KS51 Wireless water-leak sensor — product image](https://www.manthink.cn/assets/ks51.png)](https://www.manthink.cn/en/products/sensors/ks51/) ### [Keep watch on leaks with continuous field sensing.](https://www.manthink.cn/en/products/sensors/ks51/) - **Monitored quantity**: Water-leak status - **Probe options**: Spot / Rope - **Power options**: Battery / DC 5–24 V, by model - **Ingress protection**: IP65 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks51/) Temperature, humidity & leak sensor [KS52](https://www.manthink.cn/en/products/sensors/ks52/) [![KS52 Temperature, humidity & leak sensor — product image](https://www.manthink.cn/assets/ks52.png)](https://www.manthink.cn/en/products/sensors/ks52/) ### [One installation for environmental and leak monitoring.](https://www.manthink.cn/en/products/sensors/ks52/) - **Monitored quantity**: Temperature / Relative humidity - **Optional probes**: Spot / Rope leak detection - **Power options**: Battery / External power, by model - **Ingress protection**: IP65 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks52/) Wireless temperature sensor [KS53](https://www.manthink.cn/en/products/sensors/ks53/) [![KS53 Wireless temperature sensor — product image](https://www.manthink.cn/assets/ks53.jpg)](https://www.manthink.cn/en/products/sensors/ks53/) ### [Measure temperature where you need it.](https://www.manthink.cn/en/products/sensors/ks53/) - **Measured quantity**: Temperature - **Probe type**: DS18B20; probe-free version also available - **Power options**: Confirm for the ordered model - **Ingress protection**: IP65 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks53/) 86-box indoor environment monitor [KS61](https://www.manthink.cn/en/products/sensors/ks61/) [![KS61 86-box indoor environment monitor — product image](https://www.manthink.cn/assets/ks61.png)](https://www.manthink.cn/en/products/sensors/ks61/) ### [Environmental sensing, built into the wall.](https://www.manthink.cn/en/products/sensors/ks61/) - **Sensor combination**: 4 / 6 / 7-in-one, by model - **Installation**: Recessed 86-box mounting - **Power options**: Live-only / Live-neutral, by model - **Ingress protection**: IP30 [Specifications, interfaces & options](https://www.manthink.cn/en/products/sensors/ks61/) Interfaces, probes, power and regional bands may vary within a series. Refer to the product manual and confirmed configuration. COMPARE / KEY SPECIFICATIONS ## Compare side by side. | Model | Signal / Interface | Power / Configuration | Protection | Details | | --- | --- | --- | --- | --- | | KS31 | 4–20 mA or 0–10 V | 10800 mAh battery / DC 5–24 V, by model | IP65 | [View ↗](https://www.manthink.cn/en/products/sensors/ks31/) | | KS32 | Dry-contact DI | 10800 mAh Li-SOCl₂ battery | IP65 | [View ↗](https://www.manthink.cn/en/products/sensors/ks32/) | | KS51 | Water-leak status | Battery / DC 5–24 V, by model | IP65 | [View ↗](https://www.manthink.cn/en/products/sensors/ks51/) | | KS52 | Temperature / Relative humidity | Battery / External power, by model | IP65 | [View ↗](https://www.manthink.cn/en/products/sensors/ks52/) | | KS53 | Temperature | Confirm for the ordered model | IP65 | [View ↗](https://www.manthink.cn/en/products/sensors/ks53/) | | KS61 | 4 / 6 / 7-in-one, by model | Live-only / Live-neutral, by model | IP30 | [View ↗](https://www.manthink.cn/en/products/sensors/ks61/) | See the product page and official manual for full specifications, wiring and configuration differences. THE NEXT CONNECTION / APPLICATIONS START HERE ## Once your devices are connected, let ThinkLink take it from there. A general-purpose, AI-powered IoT platform with native LoRaWAN. LoRaWAN / 4G connectivity, AI operations and micro-app development. Free self-hosting, one-command installation and customizable branding. [Get the install command ↓](https://www.manthink.cn/en/#thinklink-deploy) [Discover ThinkLink](https://www.think-link.net/zh/) [ThinkLink App](https://www.think-link.net/zh/mobile/thinklink/) [TapLink](https://www.think-link.net/zh/mobile/taplink/) [![Snapshot of a ThinkLink building micro-app demo](https://www.manthink.cn/assets/thinklink-shared-demo.png) Micro-app demo · Try it online ↗](https://thinklink.manthink.cn/tkl-dashboard-web/#/custom-page-share/demo/91vpc9x9mqsx75ii) Find products that fit your site. ## Tell us about your interfaces, power and installation. [Ask about selection ↗](mailto:info@manthink.cn?subject=ManThink+product+selection+inquiry)