Skip to content
MPIA MPIA Co., Ltd.

Monitoring Systems

Sensor Hub · Smart Safety Alert

A receiver that sends text alerts on sensor detection and prolonged inactivity with just an internet connection

MWSH-300

The Sensor Hub receives signals from self-powered sensors and bells, forwards them over the internet to the MPIA central management server, and sends text messages to up to 5 registered recipient numbers. No separate PC is needed — just an internet (LAN) connection.

  • Text alertsUp to 5 registered numbers
  • Inactivity detection24 · 48 · 72 hours (Sensor Hub)
  • ConnectionWorks with just an internet (LAN) connection
  • SensorIP57 dust- and waterproof self-powered sensor

01How it works

  1. Sensor · bell operates

    Emergency bells, fire sensors, door sensors and switches send signals.

  2. Sensor Hub receives

    Detection data is sent over the internet to the central management server.

  3. Text messaging

    Text messages go immediately to 5 registered people to support initial action.

F1Register 1 sender number
F2Register · reset 5 recipient numbers
F3 · F4Register emergency bells · fire detection sensors
F5 · F6Register door sensors · light switches
F7 · F8Set activity detection sensor · detection time (24 / 48 / 72)

02Features

Instant text messages

Register 1 sender number and 5 recipient numbers, and messages are sent as soon as a sensor detects.

Inactivity detection 24 · 48 · 72 hours

Designate a switch or door sensor as an activity detection sensor, and a warning text is sent if it does not operate during that period.

Message per sensor

Text messages distinguish emergency call, door opening, temperature rise and inactivity to report the situation.

Easy installation

Attach IP57 self-powered sensors wherever you want and connect the hub to a router.

Emergency call signal

“Emergency bell activated in restroom — please check on site”

Door opening detected

“Front door opening detected”

Temperature rise detected

“Fire detection sensor activated in Zone A — please check on site”

Inactivity alert

“Inactivity detection sensor has not operated in the last 48 hours”

03System configuration

Emergency bellEmergency bellEmergency call
Fire detection sensorFire detection sensorFixed-temperature
Door sensorDoor sensorOpen / Close
Wireless switchWireless switchON / OFF
RepeaterRepeaterMWSR2-900 · Optional
Sensor HubSensor HubMWSH-300
Central management serverMPIA server
Text alertsText alertsManager's mobile phone

Ranges are based on open field with no obstacles. Each added repeater extends the range by approx. 1 km.

04Specifications

Sensor Hub

Sensor Hub

Model MWSH-300

SizeW100 × D100 × H26 mm
Weight145 g
Frequency920.7 / 447.9 MHz (FSK) / Wi-Fi
AntennaExternal antenna × 2, Internal antenna × 1
Reception rangeapprox. 1 km (open field)
Recipient numbersmax. 5
DisplayFND 4-digit, Power · Rx · Tx LED
External terminalsPower, TCP/IP, LAN (RS485)
PowerDC 9 V 1 A adapter

Receiving · monitoring devices used together

Repeater

Repeater

Model MWSR2-900

SizeW115 × D115 × H30 mm
Weight167 g
Frequency920.7 / 447.9 MHz (FSK)
AntennaExternal antenna × 2
Tx/Rx rangeapprox. 1 km (open field)
Range extension+approx. 1 km (open field)
DisplayFND 3-digit, LED (Rx · Tx · Power)
PowerDC 12 V 1 A adapter

Specifications are subject to change without notice for performance improvement.

05Applications

Seniors living alone (preventing lonely deaths)

Text to guardians · caregivers after prolonged inactivity

Single-person households (security)

Access control with a front door sensor

Small unmanned facilities

Access control · fire detection

Small stores

Door sensors for security · fire detection sensors

Applicable platforms

08FAQ

QIs a PC unnecessary?

Yes. Connect the Sensor Hub to an internet router via LAN and it sends text messages without a PC.

QHow many people receive the text messages?

Up to 5 recipient numbers can be registered.

QHow does inactivity detection work?

If you designate a sensor used daily, such as the front door sensor or a light switch, as the activity detection sensor, a warning text is sent when it has not operated even once during the set period of 24 · 48 · 72 hours.

View all questions

CONTACT MPIA

Sensor Hub · Smart Safety Alert

A receiver that sends text alerts on sensor detection and prolonged inactivity with just an internet connection