Meross
Meross Smart Sprinkler Timer (MST100)
Faucets and Showers · Water
HomeKit onlyBridgeWi-Fi
Where to buy
- Meross websiteshop.meross.com
- Meross website (meross.com)meross.com
- Amazonamazon.com
- Amazon AUamazon.com.au
Search other stores
Store links open the product’s own page, matched to this accessory by name and model number. Prices and stock aren’t checked and vary by region; check that the model you buy says it works with Apple Home or Matter.
From store listings
| Material | Brass |
|---|---|
| Model | MST100 |
From the Bing Shopping page for “MEROSS MST100 Smart Sprinkler Timer & Hub Brass - Alexa Google Apple - NEW”.
In ReReHome
Active state and run time for faucets, showers and water valves.
And every other characteristic or Matter attribute it exposes.
Connectivity
- proprietary RF
- Wi-Fi
How it reaches your home
- proprietary RF → Meross Smart Hub MSH400 → Apple Home (HomeKit bridge)
Identifiers
| Manufacturer | Meross |
|---|---|
| Model / SKU | MST100 / MST100HHK (kit with MSH400 hub) |
Compatibility notes
- Battery-powered hose-tap timer (4x AA, about a year) with brass inlet/outlet that talks sub-GHz RF (433 MHz per EU retailer listings) to the Wi-Fi MSH400 hub, which supports up to 24 timers (shop.meross.com; domadoo.fr, read 2026-10-18).
- Meross states HomeKit works only with the MSH400 hub (voice and remote control); it is not HomeKit compatible when paired to the MSH450 hub (shop.meross.com product page, 2026).
- 9to5mac's review (2025-03-21) describes full Home app integration: valve tile, Siri control and time/weather-based automations that run the valve for a set duration; the kit is about $60 in the US (9to5mac.com; shop.meross.com).
