Introduction

Alert Module

ALM series alert module include high output volume output or Ultra-bright flashing device. It can use to alert warning in many applications like fire, leakage, security... etc.

The ALM-06-WF / ALM-04-MRTU is equipped with a 4 GB microSD card (TFlash), it can play the MP3 files when the DI status matches the pre-defined conditions or gets Modbus TCP/Modbus RTU commands via the Wi-Fi/RS-485. The built-in speaker power is 3W, it is about 99dB. And every condition not only plays the MP3 files but also can be configured to turn on the built-in relay to trigger other external device like warning lamp. When requires for louder sound, the module also features audio line out for external PA system.
 

The ALM-Horn/-WF/-MRTU include Piezo Transducer tone output up to 120dB and Ultra-bright flashing LED, with 1 channel DI input and a remote trigger alarm based on Modbus protocol, it also have an Open Collector (Sink) output for trigger other external device.
 

ALM-06-WF / ALM-Horn-WF have WLAN connection complies with the IEEE802.11b/g/n standards. It supports Modbus TCP protocol and network encryption configuration.
 

ALM-04-MRTU / ALM-Horn-MRTU have RS-485 connection and support Modbus RTU protocol. It makes an easy way to incorporate RS-485 connectivity into monitoring and control systems. Therefore, both Wi-Fi and RS-485 devices makes perfect integration of monitoring in SCADA software and HMI utility.

Selection Guide

Alert Module
Series	Model	RS-485  Modbus RTU	Wi-Fi (2.4 GHz) Modbus TCP	DI (Dry)	DO	Audio Playback	Sound Device	Sound Pressure Level/Output
	ALM-06-WF (Asia Only)	-	Yes	6	Relay DC 50 V/ 100 mA x 1	MP3/64 File (Max)	Speaker	99dB @ 1KHz/1meter/3W
	ALM-04-MRTU	Yes	-	4	Relay DC 50 V/ 100 mA x 1	MP3/64 File (Max)	Speaker	99dB @ 1KHz/1meter/3W
	ALM-Horn-BR	-	-	1	Open Collector (Sink) DC 30 V/ 500 mA x 1	Tone/4mode	Piezo Transducer	120 ±5dB @ 15cm/3.2 KHz
	ALM-Horn-WF-BR	-	Yes	1	Open Collector (Sink) DC 30 V/ 500 mA x 1	Tone/4mode	Piezo Transducer	120 ±5dB @ 15cm/3.2 KHz
	ALM-Horn-MRTU-BR	Yes	-	1	Open Collector (Sink) DC 30 V/ 500 mA x 1	Tone/4mode	Piezo Transducer	120 ±5dB @ 15cm/3.2 KHz