Delayed emergency response due to smartphone inaccessibility or user panic poses a critical safety risk in community and institutional settings. This study developed and evaluated HelpCharm, an Arduino-based IoT SOS pendant designed to transmit distress signals through a single-action mechanism without reliance on conventional mobile device operation. Employing a descriptive-developmental research design grounded in the Technology Acceptance Model (TAM), the device was assessed by 30 purposively selected participants comprising students, parents, barangay tanods, and police personnel using a validated researcher-made instrument on a 4-point Likert scale. Evaluation covered five performance dimensions: transmission speed, signal reliability, range, ease of use, and overall user satisfaction. Results indicated that HelpCharm performed at a high to very high level across all dimensions, with grand mean scores ranging from 3.64 to 3.73, reflecting strong perceived usefulness and ease of use among diverse user groups. These findings suggest that a low-cost, single-action IoT pendant offers a viable complement to smartphone-dependent emergency alert systems, particularly in contexts requiring rapid, panic-proof distress signaling. Limitations include constrained signal reliability in low-connectivity environments and a sample confined to a single community setting. Future research should conduct broader field trials across varied geographic and network conditions to further validate the device's operational scalability.