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ALM-Horn-MRTU-BR CR ICP DAS Alert Module




RS-485 communication, Single Input, Single Output, 4 selectable Tone, Piezo Transducer Alarm Siren



€ 99,31

(VAT excluded)

€ 121,16(VAT included)

Prezzo di 1 pz. iva (22%) inclusa: € 121,16

Availability: 15 business days

SKU: 118450

Model: ALM-Horn-MRTU-BR CR

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  • Standard Alarm Siren or with RS-485 interface
  • Modbus RTU protocol
  • Photo couple input, Open Collector output
  • Piezo Transducer Output
  • Water clear upper cover with 8 Ultra-Bright RED LED, or -BR version with 8 Blue + 8 Red Ultra-Bright LED
  • 4 Selectable Alarm Tone
  • NC/NO Input Selectable


The ALM-Horn Series include 3 models, -BR with water clear upper cover, Blue + Red LED, ALM-Horn as standard siren, ALM-Horn-WF have WLAN connection complies with the IEEE802.11b/g/n standards, support Modbus TCP protocol & HTML, ALM-Horn-MRTU have RS-485 interface support Modbus RTU protocol.
ALM-Horn series device include 1-channel digital input for any dry contact output such as SA, BA, FA..etc, and 1-channel digital output  Each device has 4 kinds of alarm tone, NC/NO input mode select by switchs. The ALM-Horn-WF & -MRTU support Modbus protocol, Which makes perfect integration for monitoring or control in SCADA software, HMI Modbus & Utilitys. ALM-Horn series have High Sound Pressure output, wide input power range & IP43 waterproof.


EMS Protection

EFT (IEC 61000-4-4): ±2 kV for Power
ESD (IEC 61000-4-2): ±8 kV Air for Random Point

LED Indicators

Status: 2 colors LED, Blue for System status, Red for Alarm status.

Digital Input/Counter

Channels: 1
Type: Dry Contact: Sink
ON Voltage Level: Close to GND
OFF Voltage Level: Open
Isolation: 3750 VDC

Digital Output

Channels: 1
Type: Open Collector (Sink)
Load Voltage: +3.5 VDC ~ +30 VDC
Load Current: 400 mA

Alarm Output

LED: Water clear upper cover with 8 RED UltraBright RED LED
-BR: With 8 Blue + 8 RED UltraBright LED
LPiezo Transducer Pressure Level: 120 ± 5 dB @10cm/3.0 KHz (W/O waterproof membrane)

DIP Switch

Mode: SW1,2: Include 4 kinds of alarm Tone, SW4:Input Mode (NO/NC) select

COM Ports

Ports: 1 x RS-485
Baud Rate: 300 ~ 115200 bps
Data Format: Data bit: Odd
Stop bit: Even, 8, 1/2
Protocol: Modbus RTU


Reverse Polarity Protection: Yes
Input Range: 12 ~ 48 VDC with Reverse Protection (Vin to GND)
Consumption: 0.48 W Standby.


Dimensions (mm): 119 x 119 x 48 (W x L x H)
Installation: Panel Mount/
Wall Mount
Ingress Protection Rating: IP43


Operating Temperature: -20 ~ +75°C