ALM-04-MRTU MP3 Alert Module, RS-485 Modbus RTU, 4-ch DI, 1-ch Relay
MP3 alert module with an RS-485 Modbus RTU interface, four isolated digital inputs, one relay output and an audio line out for SCADA and HMI alarm systems.
- RS-485 interface with Modbus RTU protocol for SCADA and HMI integration
- Four isolated dry-contact digital inputs (3750 VDC isolation) with 8 alarm modes
- One Form A relay output rated DC 50 V/100 mA
- MP3 playback with external line out and up to 64 audio files
- Audio and configuration stored on micro SD (T-Flash), with PC editor utility for file transfer
- Wide +9 VDC to +28 VDC power input with reverse polarity protection
1.143,54 kr. pr. stk.
| 1–9 stk. | 1.143,54 kr. | |
|---|---|---|
| 10–30 stk. | 1.113,64 kr. | −3 % |
| 31+ stk. | 1.091,22 kr. | −5 % |
Produktinformation "ALM-04-MRTU MP3 Alert Module, RS-485 Modbus RTU, 4-ch DI, 1-ch Relay"
The ALM-04-MRTU CR is an MP3 alert module that brings audible and relay-based alarm signalling into RS-485 monitoring and control networks. It speaks Modbus RTU, so it can be polled or driven from SCADA software and HMI panels that already use that protocol.
Four isolated dry-contact digital inputs, each supporting up to 8 alarm modes, detect field events. A single Form A relay output can drive an external device, while the audio line out feeds an external amplifier or sounder. Up to 64 MP3 files are held on a micro SD card, which also stores the module configuration.
Typical choices include building and factory automation, security and visitor call systems, and fire alarm applications. The module mounts on a panel, wall or DIN rail and accepts a 9 to 28 VDC supply with reverse polarity protection.
Applications
- Building Automation
- Security Automation
- Machine Automation
- Factory Automation
- Testing Equipment
- Guest/Visitor Bell
- Fire Alarm System
| Product type: | Alert module |
|---|---|
| Interface: | RS-485 |
| Protocol: | Modbus RTU |
| Digital inputs: | 4 |
| Relay outputs: | 1 |
| Ports: | 1 |
| Isolation: | 3750 VDC |
| Power input: | +9 VDC ~ +28 VDC |
| Operating temperature: | -20 ~ +75 °C |
| Mounting: | Panel / Wall / DIN-rail |
Specifikationer
| EMS Protection | |
|---|---|
| EFT (IEC 61000-4-4) | ±4 kV for Power |
| ESD (IEC 61000-4-2) | ±4 kV Contact for Each Terminal ±8 kV Air for Random Point |
| LED Indicators | |
| Status | 1 x System status 1 x Alarm status |
| Digital Input/Counter | |
| Channels | 4 |
| Type | Dry Contact |
| ON Voltage Level | Close to GND |
| OFF Voltage Level | Open |
| Isolation | 3750 VDC |
| Relay Output | |
| Channels | 1 |
| Type | Form A |
| Contact Rating | DC 50 V/100 mA |
| Audio | |
| Sampling Frequency | Rate: 24/44.1 (prefer) / 48 KHz |
| Line out Impedance | 1 KΩ |
| Audio Output | 3 W (Max.) |
| Audio Startup Time | < 150 ms |
| Bit Rate | 32 64 96 128 (prefer) 160 192 kbit/s |
| Audio File Format | MPEG1-Audio Layer Ⅲ (MP3) |
| Number of File | 64 (Max.) |
| Volume Control | Digital Volume Control |
| Sound Pressure Level | 99 dB @ 1 KHz/1 meter |
| COM Ports | |
| Ports | 1 x RS-485 |
| Baud Rate | 300 ~ 115200 bps |
| Data Format | (N, 8, 1), (N, 8, 2), (E, 8, 1), (O, 8, 1) N, 8, 1 |
| Protocol | Modbus/RTU |
| Storage | |
| File Transfer | PC Editor Utility, Copy to Micro SD |
| File System | Fat16/32 |
| Type | Micro SD (T-Flash) up to 32GB, bundle 4GB |
| Power | |
| Reverse Polarity Protection | Yes |
| Input Range | +9 VDC ~ +28 VDC |
| Consumption | 0.48 W Standby |
| Mechanical | |
| Dimensions (mm) | 72 x 72 x 22 (W x L x H) |
| Installation | Panel Mount Wall Mount DIN-Rail |
| Environment | |
| Operating Temperature | -20 ~ +75°C |
| Storage Temperature | -30 ~ +80°C |
| Humidity | 10 ~ 95% RH, Non-condensing |
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