[. . . ] €¢â€¢ Do not expose the baby unit and parent unit to extreme cold or heat or to direct sunlight. Do not put the baby unit and the parent unit close to a heating source. €¢â€¢ Never cover the parent unit and the baby unit with anything (e. €¢â€¢ Always place batteries of the correct type in the parent unit (see ‘Inserting the batteries’ in chapter ‘Preparing for use’). [. . . ] You can use rechargeable batteries in the parent unit, but you need to charge them in a separate charger. 3 To reattach the battery compartment lid, first insert the lugs into the bottom rim of the battery compartment. €¢â€¢ To prevent a high-pitched sound from one or both units, make sure the parent unit is at least 1. 1 Positioning the baby monitor B Warning: Keep the baby unit out of the reach of the baby. €¢â€¢ Because the cord of the baby unit presents a potential strangulation hazard, make sure that the baby unit and its cord are at least 1 metre/3. 2 Linking parent unit and baby unit 1 Press and hold the 3 button on the baby unit for 3 seconds until the power-on light lights up. 2 Press and hold the 3 button on the parent unit for 3 seconds until the ‘link’ light starts flashing red. 6 Dry materials •• If no connection is established, the ‘link’ light continues to flash red and the parent unit beeps. 1 Smart Eco mode What to do if no link is established •• If the parent unit is out of range, place it closer to the baby unit. €¢â€¢ If the baby unit or parent unit is too close to another DECT appliance (e. A cordless phone), switch off this appliance or move the unit away from this appliance. €¢â€¢ If the baby unit is switched off, switch it on. This mode is always active and automatically reduces the DECT signal from the baby unit to the parent unit to save energy and reduce radio transmission. 1 Nightlight The nightlight produces a soft glow that comforts your baby. 1 Press the nightlight button on top of the baby unit to switch the nightlight on or off. €¢â€¢ The operating range is up to 300 metres/985 feet outdoors and up to 50 metres/150 feet indoors. €¢â€¢ The operating range of the baby monitor varies depending on the surroundings and factors that cause signal attenuation. Wet and moist materials cause so much signal attenuation that the range loss is up to 100%. 7 E N GL IS H •• When the parent unit and baby unit are linked, the ‘link’ light turns solid green. 1 Battery light 1 2 The battery light is off when the parent unit is connected to the mains or the batteries contain enough energy. 2 When the batteries are low, the battery light flashes red and the parent unit beeps. If you hold down the - button for 2 seconds, you set the volume to mute. [. . . ] •• The specified range is only valid outdoors in open air. Inside your house, the operating range is limited by the number and type of walls and/ or ceilings in between. Why is the connection lost or are there sound interruptions every now and then?€¢â€¢ The baby unit and the parent unit are probably close to the outer limits of the operating range. [. . . ]