Elderly SOS Wireless Calling System

This wireless caregiver pager system consists of a compact, IP55-rated call button and a mains-powered receiver. The transmitter is 2.4 x 1.6 x 0.8 inches (65g), powered by a CR2032 battery; the receiver is 3.9 x 2.4 x 1.2 inches (120g), powered via AC adapter. Its adaptive high-frequency radio signal achieves up to 1000 feet line-of-sight range and reliably passes through several interior walls. It supports configuration of up to 16 transmitters and unlimited receivers, each assignable to one of 52 available melodies. Volume control spans five levels (0–110 dB), and a dedicated silent mode uses only visual LED flash. The button is designed for versatile placement: wearable as a necklace, clip-on for clothing, adhesive-mountable on walls (e.g., bathroom or bedside), or attachable to wheelchairs. Engineered for independence and dignity, it enables elderly, disabled or recovering users to summon help instantly — no shouting, no walking, no app setup, and crucially, no monthly fee. Caregivers benefit from uninterrupted personal time while remaining confidently reachable. Suited for single-storey bungalows, multi-level homes, sheltered housing, or live-in care scenarios — especially where fall detection or rapid response is prioritised without reliance on smartphone connectivity or internet infrastructure.