VTech DM1215 - Charge the batteries before use; Power on or off the baby monitor

Make sure the parent unit, the baby unit and the power adapter cords are out of reach of children.
Charge the batteries before use
When you have connected and turned on the parent unit and baby unit, the batteries will be charged automatically.
Notes
Before using the baby monitor for the first time, charge the parent unit and baby unit batteries for 12 hours.
It takes longer to charge the batteries when the parent unit and baby unit are turned on. To shorten the charging time, turn the parent unit and baby unit off while charging.
The standby time varies depending on the sensitivity level you set, your actual use and the age of the batteries.
Power on or off the baby monitor
1. Press and hold to power on the baby unit. The power light turns on.
Press and hold to power off the baby unit. The power light turns off.
2. Press and hold to power on or off the parent unit.