Hours Of Operations Key Systems Connecticut East Haddam 06423 Key Systems Hours of Operation and Location in East Haddam, CT 06423 4.0 - 140 votes 26 Paula Rd, East Haddam, CT 06423 (860) 873-9469 Get Directions Key Systems Hours Category: Electronics Hours Hours may vary due to season or holiday reasons. For specific hours, please contact store directly. Map Recommend For You Sweet Shoppe Lincoln Technical Institute MCP Incorporated MIG & Company Net@Work New Computers Incorporated New Horizons Computer Learning Nexgen Nexgen Onsite Computer Services Pal Technologies