Wired plastic materials, sturdy and durable, heat-resistant, moisture-proof, shock-proof, anti-seismic single toneMature circuit design. Large noise output and low voltage, safe to use Red wire should be connected to positive electrode, black wire should be connected to negative electrode With strong iron bracket for fixing, firm and convenient Ideal for outdoor security systems and interiors. You can easily install it in the vehicle or at home. It is also ideal for industrial use Strong and durable hardwired plastic materials, heat resistant, moisture resistant, shockproof, anti-seismic Single tone circuit design mature. Large noise output and low voltage, safe to use Red wire should be connected to positive electrode, black wire should be connected to negative electrode With strong iron bracket for fixing, firm and convenient Ideal for outdoor security systems and interiors. You can easily install it in the vehicle or at home. It is also ideal for industrial use Shell Material: Plastic Rated Working Voltage: DC 12V Rated Working Current: 750mA< /p> Operating voltage range: DC 6~15V Output pressure: 1103dB/m (at 12V DC/platform test/30m3 space) Continuous working period: 120min (at DC 12V) Working temperature: -20 ~ +60 DC impedance of voice coil: 6 0.5 Tone: single tone (IC sound source) Size: approx. 4 x 4.6 x 6cm/1.6 x 1.8 x 2.4inch Quantity: 1pcs Package Included: 1 x Electronic Wired Alarm Siren for security system