Lukovee 2pcs CCTV BNC Male to Female Coaxial Video Ground Loop Isolator Balun (Black) Product Name: Video Ground Loop Isolator; Interface: BNC Male to Female; Insertion Loss: &lt;0.5dB. Input Resistance: 75 ohm; Output Resistance: 75 ohm; Frequency Response: 0-3dB at 10MHz. Isolation Voltage: 600VDC (Min); Insulation Resistance: 100m Ohm; Transient Voltage Suppressors: 12 Vrms. Size: 5.5 x 2 x 2.5cm / 2.2"x 0.8"x 1"(L*W*T); Cable Total Length: 50cm / 20"; External Material: Plastic & Metal. Color: Black; Net Weight: 18g; Package Content: 2 x Video Ground Loop Isolator, User Manual.