Audible and Visual Alarm Specification

Related document: Audible and Visual Alarm Technical Manual

This document covers the standalone RS485 Modbus RTU version of the Audible and Visual Alarm. It is separate from the Y901, Y902, and Y905 products documented in the Industrial Alarm Systems family.

Contents

1. Overview
2. Selection Information
3. Key Features
4. Technical Specifications
5. Interface and Wiring
6. Installation and Usage Recommendations

1. Overview

The Audible and Visual Alarm uses RS485 Modbus RTU control for voice playback and tri-color beacon control in red, yellow, and green. It supports steady on, slow flash, and strobe effects, plus audio file updates through Micro USB.

Item	Description
Product type	Integrated audible and visual alarm, voice plus tri-color beacon
Control method	RS485 Modbus RTU for networked control of audio and beacon functions
Storage medium	Built-in FLASH, 8 MB by default
Audio file update	Supported through Micro USB connection to a PC

2. Selection Information

2.1 Selection Parameters

Parameter	Options
Power version	DC 9 to 30 V, with 12 to 24 V recommended
Mounting method	Screw mounting or magnetic mounting, depending on mechanical version
Control version	Modbus RS485
Harness definition	Default A+ / B-, with actual wire color subject to the product shipped

3. Key Features

Feature	Description
Tri-color beacon	Red, yellow, and green light output
Configurable light effects	Steady on, slow flash, strobe flash, and off
Voice playback	Supports MP3 playback and track control
Group playback	Supports direct playback by folder and file number, with folders 01 to 99 and tracks 001 to 255
Volume control	Adjustable by serial command, typically 0 to 30 levels
Parameter retention	Address, baud rate, and related settings are retained after power loss
Bus networking	Typically up to 32 nodes on one bus without repeaters, with expansion available through repeaters

4. Technical Specifications

4.1 Electrical

Parameter	Specification
Rated supply voltage	DC 9 to 30 V
Recommended supply	DC 12 to 24 V, current capacity >= 1 A
Power consumption	Approx. 5 W at 12 V with an 8 ohm speaker
Audio format	MP3, recommended bit rate <= 192 kbps
Supported sampling rates	8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 kHz
Frequency response	70 Hz to 13 kHz
Protection rating	IPX65

4.2 Environmental

Parameter	Specification
Operating temperature	-40 °C to +85 °C
Operating humidity	0% to 95% RH, non-condensing

4.3 Communication Parameters (RS485)

Parameter	Specification
Protocol	Modbus RTU
Default address	0x01
Super address	0xFF, used for broadcast or wildcard control
Default baud rate	9600 bps
Data format	8N1
Check method	CRC16 for Modbus, low byte first
Supported function codes	0x03 query, 0x06 control

5. Interface and Wiring

5.1 Terminal Definition (RS485 Version)

Terminal	Description
V+	Power positive
V-	Power negative
A+	RS485 A
B-	RS485 B

5.2 Wiring Recommendations

Item	Recommendation
Bus polarity	Connect A+ to the host A, and B- to the host B
Reference ground	A common ground between the host and device is recommended
Termination	Add 120 ohm termination resistors at both ends of the RS485 bus
Node count	Typically <= 32 devices without repeaters
Power	Do not connect AC power and do not reverse the polarity

6. Installation and Usage Recommendations

Item	Recommendation
Initial commissioning	Start with the default settings of address 1, 9600, 8N1 to verify communication
Audio update	Power off first, connect to a PC through Micro USB, then disconnect USB before powering on again
File organization	For 0x0F and 0x10, use folders 01 to 99 and file names 001 to 255
File management	Format the storage first, then copy files in playback order to avoid incorrect playback caused by hidden files
Pre-deployment validation	Verify four core operations before deployment: play, stop, beacon effect, and status query