Mistral 200 set with wireless doorbell button SE03 – pre-programmed and ready to use right out of the box. 500 meters range (open field); the interference-free wireless connection up to 500 meters ensures a reliable door chime. 16 polyphonic melodies; with the wide selection of appealing ringtones, you can customize your Mistral 200 flexibly. Multiple call differentiation for multiple doors. With the call differentiation feature, you can immediately tell whether someone is ringing at the front door or the garden gate. Up to 20 wireless doorbell buttons can be programmed, and 17 can be assigned a unique ringtone. Low battery indicator. The wireless chime provides a visual and audible signal when the batteries in both the doorbell button and the chime are nearly empty. This way, you won't miss any visitors due to a surprise battery depletion.