Hi! I think this picture shows LeO 45-01 prototype (Mod) base on some left wing device.
What is this device?
https://en.wikipedia.org/wiki/Lior%C3%A9_et_Olivier_LeO_45
"On 16 January 1937, the LeO 45-01 prototype, powered by a pair of Hispano-Suiza 14AA-6 / Hispano-Suiza 14AA-7 radial engines producing 1,120 hp (835 kW) each, flew for the first time. Despite problems experienced with longitudinal instability, engine reliability and overheating, the aircraft demonstrated excellent overall performance. During flight testing, the prototype was capable of reaching 480 km/h (260 knots, 300 mph) at 4000 m and of attaining 624 km/h (337 knots, 388 mph) in a shallow dive.
In September 1937, the prototype was delivered to the Centre d'Essais de Matériels Aériens at Vélizy-Villacoublay for the type's official evaluation. On 6 December 1937, it was involved in a forced landing incident as a result of both engines having failed simultaneously in mid-flight; the pilot, Jea Doumerc, was able to land without sustaining any damage. The prototype was promptly returned to the manufacturer for adjustments prior to the resumption of evaluation flights. In July 1938, the prototype, fitted with the new Mercier-designed cowlings, attained 500 km/h (270 knots, 311 mph). The earlier instability issues were partially addressed via the adoption of redesigned twin fins and rudders on the tail unit.
Various issues with the troublesome Hispano-Suiza engines had been experienced and this resulted in several changes being made to the prototype, such as the adoption of broader, more efficient air intakes for the oil coolers, which in turn reduced instances of engine overheating. On 29 August 1938, it was decided to replace the existing Hispano-Suiza engines by Gnome-Rhone 14N 20/21 engines, which were capable of producing 1,030 hp (768 kW) each; as a result of these changes, the aircraft was re-designated as LeO 451-01. Following the completion of the re-engining, the flight test programme was resumed, running from 21 October 1938 to February 1939. In spite of the new engines being slightly less powerful, the speed and general performance of the prototype remained relatively unchanged.