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 a wide selection of appealing ringtones, you can customize your Mistral 200 flexibly. Multiple call differentiation for several doors. With the call differentiation feature, you can instantly 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 level indicator. The wireless chime provides a visual and acoustic signal when the batteries in the doorbell button and chime are nearly depleted. This way, you won't miss any visitors due to a surprisingly empty battery.