Mini dynamic cctv sound monitor microphone

• Built in Preamplifier
• Adjustable button
• Adopt Taiwan design scheme, the miniature SMT design
• Voltage: linear power supply (transformer) dc 9-12 v
• Electric current: 20MA
• Frequency range: 100-100 KHZ
• Output impedance: 600 ohm non equilibrium
• Connecting mode: red (DC) white (RCA)
• Apply to Hikvision, dahua, hanbang and other DVR
• Weight:2g ( Size: 36mm*8mm*7mm)