The FBL4000 Pro is a single lane flap barrier turnstile series designed for smooth and silent operation and draws very little power. It’s made of stainless steel which makes FBL4000 Pro highly durable. FBL4000 Pro barriers are normally held in a locked position, thus denying access to the secured side. Upon FBL4000 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. FBL4000 Pro provides both security and convenient space, all in a very durable and elegant compact design.