SIYI A2 mini (single-axis tilt FPV gimbal)

Official store page and official user manual both fetched 2026-06-11; manual spec table publishes 85 g, 12 V, average 2 W (peak 12 W), Ethernet-only video output, S.Bus/PWM/Ethernet-UDP control, -10..50 C, 65x43x50 mm, 1/2.7-inch 2MP sensor, 160-deg horizontal FOV. Borderline inclusion: a stabilized wide-angle pilot-view camera rather than an observation package. light_condition set twilight from the maker's published 'starlight CMOS' low-light claim - no numeric lux figure published, hence the estimated flag. Price is the manufacturer's own store price. dimensions_mm researched 2026-07-08 (verified against source): https://www.siyi.biz/en/product/single-axis-agri-camera/a2-mini/spec/. size_classes declared 2026-08-03 as all five, not judged per class: this is a PILOTING camera (1.45-95 g across the whole in-slot set) and nothing recorded about it rules a size class out — a 14 mm nano body flies on an 18-inch airframe as readily as on a 5-inch. Weight is the one axis with real size relevance and it is governed PER DRONE by the composed thrust budget and the computed payload ceiling, never per class, so a size list is not where it belongs (Stephan, 2026-08-02: declare all five, narrow only on evidence). Flagged estimated because it is that default, not a measurement. Observation turrets in this category are NOT declared: the question does not apply to a payload item that never reaches the camera slot, and that exemption is computed from the same rule the slot scope uses rather than tagged here.