Issued model: ALM-Horn-MRTU-BR 
Effective date: 2026/8/17

Summary:
Hardware specifications have been upgraded, and a new volume-down function has been added via a built-in "dial switch".
 
Change Type:
        Mechanical Design: No change.
        Circuit Design: Add a new set of volume down DIP switches
        Software Design: No change.
 
Description:
Product functionality has been enhanced; a new volume down switch has been added And adds Ver A label
Product web page:
https://www.icpdas.com/en/product/ALM-Horn-MRTU-BR