FPV Quadcopter Mini APM V3.1 Flight Controller w/Protector Shell 

Features:
Version: V3.1 (upgrade version of APM2.6)
Use APM firmware and ground station, no need to modify
No onboard compass, which makes this version ideal for use with multicopters and rovers
8-CH output and 8-CH input
Can connect to external GPS, compass, telemetry system and PM module
12-CH function interface

Specifications:
Size: 37 x 37 x 11mm/1.5 x 1.5 x 0.4inch
Package size: 78 x 118mm/3.1 x 4.6inch
Net weight: 32g
Package weight: 34g

Package included:
1 x Mini APM V3.1 flight controller
2 x pin
6 x Cable