Outdoor Security Alarm System: The fire siren can be controlled remotely from up to 2000 meters away, making it suitable for large area security needs. However, please note that obstacles may reduce the effective range of the remote control. Notes: the remote controller is powered by 9V battery(not included, need to purchase separately) and does not contain button or coin battery

Adjustable Volume: The office alarm system provides a sound range from 0 -120 decibels, and the volume can be adjusted directly via buttons on the device. The maximum sound level of 120dB is suitable for high-alert situations where a loud alarm is necessary

Siren Loud Horn: Equipped with a high-quality speaker, the alarm produces loud and clear sound, ensuring it can be heard over a large area, making it effective for wide coverage. Used in various locations such as warehouse, factory, school, construction site, shopping mall, apartment, yard, port, ship, and crane to alert employees for different emergency conditions (like fire, harmful gases, natural disasters)

Waterproof and Dustproof: The emergency siren system features IP65 waterproof and dustproof protection, making it ideal for outdoor use and in harsh weather conditions

Switch Tone: The siren comes with 12 built-in tones, which can be easily switched using the buttons on the alarm. The Home security system Indoor includes a USB port that allows users to upload custom audio files, enabling personalized alarm sounds