Built-in siren & buzzer,Loud enough to scare off intruders This 7-inch alarm mainframe features a 1024X600PX HD IPS screen and a built-in 5000mAH lithium battery Built-in louder siren and buzzer up to 120dB 8 wired sensing zones for homes with pre-installed recessed wiring. It also connects all accessories to the app (Tuya/Smart Life APP), you can know if your home is intruder anytime, anywhere, you can better protect you and your family, as well as your private property security Input power:DC12V 1A external cable,DC5V 2A Type-C USB Built-in battery:3.7V 5000mAh Li-Ion Battery Operating power consumption:Less than 5W working temperature:-10°C-+50°C relative humidity:Less than 95% (no condensation) Wireless parameters:433MHz, eV1527 Wired zone:8 mobile format:4G WiFi standard:IEEE802.11b/g 2.4G frequency band Product size:183x135x18mm The product appearance and printed words depending on the batch, but this does not affect use. Plug Type:UK plug,it applies to Malaysia, the United Kingdom and so on. Voltage:AC230V Colour: As Shown Material: plastic Package Contents: 1 * 7 inch Alarms System 1 * adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.