• Subsidiary AEM delivers 50 additional MTP136D radios to CAL FIRE
• MTP136D is the most advanced specialist radio system for aerial firefighting
• Builds on previous CAL FIRE orders, totaling over US$1 million in value

Structural Monitoring Systems Plc ('SMS' or 'the Company') (ASX: SMN & SMNOA) has announced that its wholly owned, Canadian-based subsidiary, Anodyne Electronics Manufacturing Corp. (AEM), has delivered 50 additional MTP136D radios to the California Department of Forestry and Fire Protection (CAL FIRE) as the agency commences the next phase of fleet-wide radio upgrades. CAL FIRE purchased an initial four MTP136D aerial firefighting radios in 2024, as it began the upgrades to its aerial firefighting fleet, with a further ten radios purchased in February 2025 ahead of the most recent US$900,500 purchase order for 50 additional units. The MTP136D is widely regarded as the most advanced specialist radio system in the aerial firefighting market, meeting all USFS communications requirements across all U.S. jurisdictions and enabling both digital and analogue communication across the full 136-174 MHz frequency band. AEM is working closely with CAL FIRE to support ongoing evaluation and installation activities and is providing dedicated training systems to ensure seamless integration, operational confidence, and full utilisation of the MTP136D's intuitive capabilities. This further commitment from CAL FIRE is a significant achievement for the Company following the receipt of United States Forest Service (USFS) approval for the MTP136D in February this year.

The Company has delivered over US$1 million in value of MTP136D radios since February 2025, including the commitment to CAL FIRE, and positions AEM to pursue further fleet conversions across an addressable market of more than 3,000 aircraft and contribute strongly to AEM's FY25 avionics revenue.