When you add TRÅDFRI gateway and IKEA Home smart app, you can create several groups of light sources and control them in different ways.Use the wireless dimmer to dim, turn on/off up to 10 light sources - all will behave in the same way. Helps lower your electric bill because dimming the lights saves energy. With TRÅDFRI wireless dimmer, you can dim your lighting without a wired-in installation.A flashing light indicates when the maximum wattage for the LED driver is exceeded.The dimmer has a maximum range of 10 metres when not blocked by walls.Works with IKEA Home smart.This product bears the CE mark.Can only be used with IKEA Smart lighting products.Not suitable for use with wired dimmers.The light source has a lifetime of approx. 25,000 hours. This corresponds to about 20 years if the lamp is on for 3 hours per day.Add the TRÅDFRI gateway and IKEA Home smart app for control through Amazon Alexa, Apple HomeKit or Google Home.Colour Rendering Index (CRI): >90.Includes: 1 driver for wireless control (30W), 1 wireless dimmer, 1 anthracite-coloured lighting strips (40 cm) and 2 anthracite-coloured lighting strips (60 cm).Output voltage 24V.You can connect as many LED lighting strips as you like, as long as the total wattage of the products does not exceed the maximum wattage of the connected driver(s).If you plan to use SILVERGLANS driver in a bathroom, it must be connected to your existing wired-in electrical installation.This product bears the CE mark.In some countries electrical installation work may only be carried out by an authorised electrical contractor. Contact your local electricity authority for advice.