APPI-Technology is a French manufacturer of wireless communication equipment for mobile teams in off-network areas. The company designs, industrializes, and markets a range of radio intercoms (Full-duplex, from 300m to 4Km), as well as gateways allowing access to conventional (3G/4G) networks. APPI technologies are used in their products, or can be integrated into other systems to simplify communication for people working in hostile environments (noisy, confined, etc.), in defense, civil security, or industry.