Monitoring Systems
Sensor Hub · Smart Safety Alert
A receiver that sends text alerts on sensor detection and prolonged inactivity with just an internet connection
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
- Sensor · bell operates
Emergency bells, fire sensors, door sensors and switches send signals.
- Sensor Hub receives
Detection data is sent over the internet to the central management server.
- Text messaging
Text messages go immediately to 5 registered people to support initial action.
| F1 | Register 1 sender number |
|---|---|
| F2 | Register · reset 5 recipient numbers |
| F3 · F4 | Register emergency bells · fire detection sensors |
| F5 · F6 | Register door sensors · light switches |
| F7 · F8 | Set activity detection sensor · detection time (24 / 48 / 72) |
02Features
Register 1 sender number and 5 recipient numbers, and messages are sent as soon as a sensor detects.
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.
Text messages distinguish emergency call, door opening, temperature rise and inactivity to report the situation.
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 call
Fire detection sensorFixed-temperature
Door sensorOpen / Close
Wireless switchON / OFF
RepeaterMWSR2-900 · Optional
Sensor HubMWSH-300
Text alertsManager's mobile phoneRanges are based on open field with no obstacles. Each added repeater extends the range by approx. 1 km.
04Specifications

Sensor Hub
Model MWSH-300
| Size | W100 × D100 × H26 mm |
|---|---|
| Weight | 145 g |
| Frequency | 920.7 / 447.9 MHz (FSK) / Wi-Fi |
| Antenna | External antenna × 2, Internal antenna × 1 |
| Reception range | approx. 1 km (open field) |
| Recipient numbers | max. 5 |
| Display | FND 4-digit, Power · Rx · Tx LED |
| External terminals | Power, TCP/IP, LAN (RS485) |
| Power | DC 9 V 1 A adapter |
Receiving · monitoring devices used together

Repeater
Model MWSR2-900
| Size | W115 × D115 × H30 mm |
|---|---|
| Weight | 167 g |
| Frequency | 920.7 / 447.9 MHz (FSK) |
| Antenna | External antenna × 2 |
| Tx/Rx range | approx. 1 km (open field) |
| Range extension | +approx. 1 km (open field) |
| Display | FND 3-digit, LED (Rx · Tx · Power) |
| Power | DC 12 V 1 A adapter |
Specifications are subject to change without notice for performance improvement.
05Applications
Text to guardians · caregivers after prolonged inactivity
Access control with a front door sensor
Access control · fire detection
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.
CONTACT MPIA
Sensor Hub · Smart Safety Alert
A receiver that sends text alerts on sensor detection and prolonged inactivity with just an internet connection


