Master lock 5441d reset. Learn how to unlock with your mobile device or keypad, replace batteries, and perform emergency unlocks. On your Android or iOS mobile device, visit the app store to download the FREE Master Lock Detailed instructions for the Master Lock 5440D/5441D Bluetooth Lock Box. Push the reset lever left and down. The Master Lock No. Master Lock 5401D Wall Mount Padlock user manual provides instructions for opening, changing combination, and mounting. Follow the instructions below to open the Select Access door. While holding the battery in place, and with an authorized mobile device within range of the lock box and in Touch Unlock mode, press any keypad button on the lock box. If the lock box does not unlock, or an authorized mobile device is not available, enter the Primary Code on the lock box keypad; while holding the 9-volt battery in place. Setup instructions, pairing guide, and how to reset. The best method to enter the shackle code in the keypad is to first press and hold the “O” button and then press the first digit of the shackle code. ulkikjp shcws kot ivkgb uwvxc epwvk lqslh eumlod jtryb vsri