Buyinhere&trade; Sensitivity Volume Adjustable Fishing Rod LED Fish Bite Finder Alarm Bell Sound Buzzer Sensitivity Adjustable; Sound and light Alarm when the line pulled or sent back; Volume adjustable; This Alarm is powered by 2 Pieces AAA batteries(Not included) Installation to the seat: 1.Fix the installation seat on butt section of the rod with with PVC belt supplied. 2.Insert te Alarm into the installation seat. Installation for the fasten belt: Wrap the belt on the butt section or the bottom of the next section of the rod After cast and drop the baited hook and fix the rod on the rod holder, then draw back the line and press the rock lever with the line, adjust the pression on the lever by turning the reel, so that the the lever is angled from -20 to 20 degree. Turning on the switch on the alarm( for the alarm with the fuction of draw back alarm). Line takes off the wheel when the rod is held up. Adjutment of sensitivity: The sensitivity can be adjutable by pushing the adjusting button form 10 to 300g. Alarm sound adjustment: The Alarm sound can be controlled by the volume button.