# KS51 Wireless water-leak sensor — ManThink

> KS51 — Monitor leaks in equipment rooms, warehouses and buildings with spot probes or rope probes routed along an area.

Canonical: https://www.manthink.cn/en/products/sensors/ks51/

MANTHINK / KS51 
![KS51 Wireless water-leak sensor — product image](https://www.manthink.cn/assets/ks51.png)
Product image · Configuration depends on the ordered model

SENSE / LoRaWAN sensors

Keep watch on leaks with continuous field sensing.

Monitor leaks in equipment rooms, warehouses and buildings with spot probes or rope probes routed along an area.

- **Monitored quantity**: Water-leak status

- **Probe options**: Spot / Rope

- **Power options**: Battery / DC 5–24 V, by model

- **Ingress protection**: IP65

[View specifications  ↓](https://www.manthink.cn/en/products/sensors/ks51/#specifications) [Official manual](https://www.think-link.net/docs/zh/Device/LoRaWANSensor/ks51)

01 / SPECIFICATIONS

## Check every specification that matters.

Start with interfaces, power and installation conditions.

[Read the full technical manual](https://www.think-link.net/docs/zh/Device/LoRaWANSensor/ks51)

|   |   |
| --- | --- |
| Monitored quantity | Water-leak status |
| Probe options | Spot / Rope |
| Power options | Battery / DC 5–24 V, by model |
| Ingress protection | IP65 |
| Probe connection | 1 channel, PG7 |
| Device status | Periodic heartbeat / Water-leak events |
| Mounting | Wall mount |
| Dimensions | 120 × 72 × 28 mm |

Source: [KS51 Official manual](https://www.think-link.net/docs/zh/Device/LoRaWANSensor/ks51)  · Reviewed 2026-09-25. Confirm options, regional frequency bands and full model codes before ordering.

02 / CONNECTION

## Match the interface. Then connect the equipment.

Match physical interfaces and application protocols separately.

01 

### Probe wiring

Choose a spot or rope leak probe in the order configuration.

02 

### Placement

Fix the main unit, place the probe at the leak-monitoring location and confirm network coverage.

For terminal positions, wire assignments and installation, follow the [official wiring instructions](https://www.think-link.net/docs/zh/Device/LoRaWANSensor/ks51)  .

03 / CONFIGURATION

## Choose a configuration that fits your site.

01 Type A uses a spot probe; type B uses a rope probe. Select power options separately.

02 Detection depends on conductivity. Detection of organic solvents, purified water or other non-conductive or low-conductivity liquids is not guaranteed.

[Visit the official store](https://manthink.taobao.com/) [Ask about KS51 ↗](mailto:info@manthink.cn?subject=KS51+Product+selection+inquiry)

The store and manuals open in a new tab. Available configurations are subject to confirmed order details.

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THE NEXT CONNECTION / APPLICATIONS START HERE

## Once your devices are connected, let ThinkLink take it from there.

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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) 

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