Stainless steel Metal Whistle HIKVISION Dahua is a globally recognized

Dahua is a globally recognized leader in advanced video security technology

Prevent it from sliding down

or PC software for convenient monitoring on the go

Frequencies (1 - 8

Built-in IR light: an IR range of 15 meters provides good visibility in low or even zero-light environments

Stainless steel Metal Whistle HIKVISION Dahua is a globally recognizedIt is made of high density stainless steel, corrosion and rust proof, high density and durable Referee whistle, coach whistle, outdoor sports whistle, call for help warning, traffic police command, pet training Distribution of metal hanging parts can be locked on the key chain or on the lanyard, which is convenient to carry and not easy to lose Adopt scientific double resonant cavity design to make the sound more sonorous, the best choice for