The ZKTeco FBL4200 Pro dual lane flap barrier turnstile is an elegant cost-effective entrance control system designed for high-traffic volume. The FBL4200 Pro series should work together with FBL4000 Pro series to build multiple lanes.The FBL4200 Pro is a Flap Barrier Turnstile for additional Lane series designed for smooth and silent operation and draws very little power. It’s made of stainless steel which makes FBL4200 Pro highly durable. FBL4200 Pro barriers are normally held in a locked position, thus denying access to the secured side. Upon FBL4200 Pro’s reader (RFID and/or fingerprint) positively recognizing a user’s valid access card or fingerprint, its barriers retract upward automatically, thus allowing users passage to the secured side. During emergencies the barriers automatically retract upward, thereby avoid users being trapped. A capacitor board for power outage safety can be installed for retracting the barrier automatically.