ToF Smart Refill and Distance Sensor (WS201)

The hardware functions as an ultra-compact indoor ToF short-range distance and refill sensor explicitly engineered to deliver precise, non-contact proximity telemetry and asset consumption tracking across high-frequency service environments. It features a high-performance Time-of-Flight (ToF) measurement lens operating with a targeted 25° field of view and a ±5° field accuracy to reliably span an operational detection range of 1 to 55 cm with a strict distance accuracy threshold of ±1cm. The embedded core dynamically modulates its sensing data resolution across three distinct millimetric bands relative to current object distance vectors, providing 1mm resolution up to 15.0cm, 2mm resolution up to 35.0cm, and 3mm resolution up to 55.0cm.

Driven by an ultra-low-power radio architecture configured as a universal Class A network node, the device utilizes an internal status indicator loop, a manual hardware reset switch, and localized intelligence supporting programmable threshold alarms and hibernate modes. The system achieves outstanding off-grid deployment independence, drawing current from a single miniature 590mAh CR2450 lithium battery to deliver an operational service lifetime reaching 3.2 years under intensive testing schedules. Encased within an exceptionally lightweight, flame-retardant white ABS+PC housing measuring exactly 66 × 38 × 12 mm and weighing a mere 24.7 grams with its battery included, the wire-free module handles simple flush mounting onto flat surfaces with double-sided 3M adhesive tapes while utilizing integrated near-field communication loops or downlink commands for tool-free contactless parameter configurations.