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Small white rectangular sensor with rounded edges, wall-mountable, two AA batteries inside

TP-Link

TP-Link MS100 Smart Motion Sensor Zigbee

SKU CH-BM32-RCPBP

Detects motion to trigger smart lights, send alerts and save energy via the Kasa app

  • Connection protocolBluetooth
  • Product typeMotion
  • Smart lighting turns on when you enter a room
  • Occupancy sensing saves energy by keeping lights off in empty spaces
  • Motion alerts reach your phone from anywhere
  • LED indicators show power, network and sensor status at a glance
  • Kasa app sets up the sensor and links it to the SR20 router

Smart Motion Sensor for Zigbee Hubs

The TP-Link MS100 detects movement and sends alerts through a compatible SR20 router hub. It runs on two included AA batteries rated for up to two years of life. The sensor is designed for indoor use with the Kasa app on iOS or Android devices.

Battery Power and App Control

Two AA cells ship in the box so the unit works immediately after pairing. The Kasa app handles setup, remote notifications and lighting automations such as turning lights on when a room is occupied and off when it is empty. LED indicators show power status, network joining and reset state.

Hub Dependency and Placement Checks

This sensor requires a separate TP-Link SR20 router to function as a Zigbee hub; it cannot connect directly to Wi-Fi or Bluetooth alone. Verify you already own or plan to buy that router before ordering. Ensure the intended mounting location stays within Zigbee range of the hub.

How it compares

Measured against everything we stock in Alarm Kits & Motion Sensors, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 93% of the 180 comparable items (median $30.99).

Specifications

Product
Product typeMotion
Connectivity
Connection protocolBluetooth

Questions about this item

How often will the two included AA batteries need replacing?

The sensor runs on two AA batteries rated for up to 2 years of use before replacement is needed.

What is the maximum range before the Zigbee link to the SR20 router drops?

The Zigbee connection to the SR20 router is reliable up to 20 metres in typical indoor conditions.

Does the sensor generate noticeable heat or fan noise when it runs continuously?

The battery-powered unit has no fan and produces no audible noise or detectable heat during all-day operation.

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