DC02-TCP WEB Based Double Door Controller 1. 2 doors, 4 Readers 2. ... control and alarm monitoring features: expiry date for clubs, automatic activation, interlock between two doors, time zones, supervision, ... or button Quantity of reader: 4pcs Can control the gate output relay: 2pair Open delay time: 1-600 seconds ... the PC: No limite TCP/IP WEB Based Double Door Access Controller, 2 doors / 4 readers