This products consists of a standard photo electric Smoke detector with a pluggable Z-Wave wireless interface module. The Smoke detector will also work as a stand alone product and is certified by VDS according to EN 14604. The smoke chamber of the detector has a stainless steel reel with antistatic plastic chamber. A button allows on-device test of smoke chamber, electronics and battery. The device also offers a built-in self test and an electronic smoke chamber test to avoid the use of test aerosol. A low battery warning will last for 30 days but full function of the detector is guaranteed during this time. The Z-Wave module allows to report the smoke and low battery alarm wirelessly to a central controller. The detector can also be used as a wireless siren for alarm system or other applications. The wireless module is operated by the 9V battery of the smoke detector. An optional external power supply allows external powering the unit. According to VdS 3515 (Smoke Detectors with Wireless Communication) this device will send alarm signals to all other smoke detectors registered in association group 2 to turn on their siren. This function ensures that all smoke detectors will issue noise if one of them detected a smoke.