Features: 【Smart emergent Call】Providing rapid-response emergent call functionality for elderly individuals, children, and other groups requiring special attention. 【Broad-Spectrum Compatibility】Supports European voltages ranges from 110V to 250V, eliminating concerns over voltages mismatch. 【Durable ABS Construction】Manufactured from high-strength ABS, offering excellent impacts resistance and wear durability. 【Simplified Installation】not requires complex tools for setup, saving time and effort. 【Multi-scenario Application】Suitable not only for offices or homes, but also for hospitals, care homes, and other settings requiring emergent call device. Specifications: Component: ABS Input voltages: AC110V~250V Standby power consumption: <1W Operating power consumption: <2W Wireless frequency: 433MHz Wireless encoding: eV1527 WiFi standard: 2.4GIEEE802.11b/g/n Working temperature: -10℃~55℃ Working humidity: <80% (not condensation) Technical parameters: Intelligent | Support multi-band voltages input | High sensitivity emergent call function Size about 79x46mm/3.11x1.81in Package Includes: 1 set of WIFI Wall Life Alert (European regulations) note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.