[. . . ] 3 Failure to comply with the following instructions may result in serious personal injury or property damage. 6 Installation and wiring must be in compliance with your local building and electrical codes. [. . . ] 2 Programming the switching time (UP/DOWN) If you only wish to alter the switching time and leave the time unchanged, begin with step 4. 1 and acknowledge all displayed values with the middle key until the display shows a P for programming. If a switching time has not yet been programmed, or if the reset key has been pressed and also after a lengthy power failure the clock will show the factory set UP time = 7:00. 1 Set the switching time hour with the UP or DOWN keys By holding down the UP or DOWN key the hour display counts to the next largest number divisible by 5 and then keeps counting up in steps of 5. Acknowledge with the middle key Warranty Chamberlain warrants to the first retail purchaser of this product that the product shall be free from any defect in materials and/or workmanship for a period of 24 full months (2 years) from the date of purchase. Upon receipt of the product, the first retail purchaser is under obligation to check the product for any visible defects. Conditions: The warranty is strictly limited to the reparation or replacement of the parts of this product which are found to Acknowledge with the middle key be defective and does not cover the costs or risks of transportation of the defective parts or product. This The current hour display for the DOWN time is shown warranty does not cover non-defect damage caused by flashing. The DOWN arrow, the 1 for Monday and the unreasonable use (including use not in complete minutes are shown statically. If a switching time has not accordance with Chamberlain's instructions for yet been programmed, or if the reset key has been installation, operation and care; failure to provide pressed and also after a lengthy power failure the clock necessary maintenance and adjustment; or any will show the factory set DOWN time = 21:00. [. . . ] By again pressing the UP and DOWN keys simultaneously for about 2 sec. Factory settings By triggering the RESET function the values entered will revert to the factory settings: Switching program: UP 07:00, DOWN 21:00 Light values: Sun 4, twilight 4 Time: 12:00, weekday 1 = Monday 10. [. . . ]