a battery is first installed or temporarily removed and re installed specifically to conduct a battery status check activation of the device or the change from one function to another or whenever fresh battery contact is made by installing a battery would actuate a programmed routine through a circuit separate from the lighting circuit whereby a voltage test of the battery under load is conducted against an on board electronic reference such as a zener diode if the battery is at a voltage level associated with an acceptable level of remaining capacity a predetermined vibratory pattern e g three buzzes would occur if a depleted level of battery voltage i e capacity is detected then a different pattern of vibratory signals e g two buzzes would be sent to show a lower state of battery readiness at some predetermined battery voltage capacity level the vibratory feedback e g one or no buzzes would alert the user that the battery 44 must be replaced the electronic components disposed within the cover 12 and base 34 and upon the electronic circuit board 52 and the nose switch board 54 are protected by the ring seal 38 or other sealing method such as ultrasonic welding to prevent moisture and dust intrusion if attachment is made by mechanical means such as screws 26 they would be installed with either o rings or other compounds with sealant qualities there has thus been outlined rather broadly the.