Elementary · middle · high school restrooms
Emergency bells in accessible restrooms were connected to monitors in the teachers' office and administration office.
Emergency Safety Platforms
Emergency Bell Monitoring Platform
A system that monitors alarm situations from multiple emergency bells together, using wire-free self-powered emergency bells, on-site beacon lights and a control room monitor
01Why it is needed
Schools, hospitals and public institutions have long used emergency bells that are wired or battery-powered.
Since July 2023, emergency bells have been mandatory in public restrooms, creating a need to install them quickly in existing buildings.
- Locations of multiple emergency bells displayed as numbers and letters
- Up to 224 emergency bells per Single-window Monitor, up to 999 with a Signal Monitor (unique IDs, no radio interference)
- With many emergency bells, relays and repeaters forward signals to the monitor
- Protocol matching with existing solutions via the RS485 of the Single-window Monitor and Signal Monitor
02System configuration
Configuration 1 — Relay + Single-window Monitor + beacon light
Self-powered Emergency Bell (round)MWST-110100 m
RelayMWSRT-800 · Optional150 m
Single-window Monitor (receiver)MWSM1-300
Beacon light (built-in DC receiver)DL-100Ranges are based on open field with no obstacles. Each added repeater extends the range by approx. 1 km.
Configuration 2 — Repeater + Signal Monitor (up to 999)
Self-powered Emergency Bell (round)MWST-110100 m
RepeaterMWSR2-9001 km
Signal MonitorMWSM-700RS485
PC monitoringSensor location · detection history03Products · specifications
Self-powered Emergency Bell (round)
Model MWST-110
| Size | Φ63 × H25 mm |
|---|---|
| Weight | 38 g |
| Frequency | 920.700 MHz (FSK) |
| Antenna | Internal antenna |
| Transmission range | approx. 100 m (open field) |
| Power | Self-powered (no battery) |
| Dust · water protection | IP57 |
| Durability | 100,000 operations |
Relay
Model MWSRT-800
| Size | W115 × D115 × H28 mm |
|---|---|
| Weight | 160 g |
| Frequency | 920.700 MHz (FSK) |
| Antenna | External antenna |
| Tx/Rx range | approx. 150 m (open field) |
| Range extension | +approx. 150 m (open field) |
| Max. connections | max. 10 |
| Display | FND 3-digit, Power · Rx · Tx LED |
| Power | DC 12 V 1 A adapter |
Single-window Monitor (receiver)
Model MWSM1-300
| Size | W154 × D108 × H33 mm |
|---|---|
| Weight | 280 g |
| Frequency | 920.700 MHz (FSK) |
| Antenna | External antenna |
| Reception range | approx. 150 m (open field) |
| ID registration | max. 224 |
| Signal storage | max. 10 |
| Display | FND 2-digit, Signal storage LED |
| Power | DC 12 V 1 A adapter |
Beacon light (built-in DC receiver)
Model DL-100
| Size | Φ100 × H25 mm |
|---|---|
| Frequency | 920.700 MHz (FSK) |
| Reception range | approx. 50 m (open field) |
| Operation control | External ON/OFF switch |
| Receiver module | Built-in DC receiver |
| Power | DC 12 V 1.5 A adapter |
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 |
Signal Monitor
Model MWSM-700
| Size | W258 × D107 × H34 mm |
|---|---|
| Weight | 497 g |
| Frequency | 920.7 / 447.9 MHz (FSK) |
| Antenna | External antenna × 2 |
| Reception range | approx. 1 km (open field) |
| ID registration | max. 999 |
| Signal storage | Up to 10 overlapping signals |
| Display | FND 5-digit LED |
| External terminals | RS-485, beacon light, speaker, power |
| Power | DC 12 V 1 A adapter |
04Case studies
Myongji Hospital operating rooms
Emergency calls from operating rooms were connected to the doctors' office and control room. Each operating room has a self-powered emergency bell, and signals reach the receiver through relays in the corridor.
Installation sites
- Elementary · middle · high school restrooms in Songdo
- Emergency calls in Myongji Hospital operating rooms
- Parking lot of a comprehensive welfare center for people with disabilities
- Restrooms in youth housing
- 33 community service centers
- Bucheon City Hall restrooms
- Sports center restrooms
- Comics museum restrooms
- Clean rooms · hazardous equipment entrances · machine work areas
Field installation photos8
05Benefits
01Benefits
When the emergency bell is pressed, the number appears on the monitor and the beacon light goes off for a quick response
02Benefits
No added wires, so it takes up less space and can be installed where you want
03Benefits
Expanded to school restrooms, public restrooms, hospitals and public institutions
CONTACT MPIA
Emergency Bell Monitoring Platform
A system that monitors alarm situations from multiple emergency bells together, using wire-free self-powered emergency bells, on-site beacon lights and a control room monitor