4-wire system + low acquisition resistance = easier to connect in series into the current loop (0/4-20mA) to realize multiple displays. Current type input impedance: <60Ω. Also note that monitor settings may vary from computer to computer and may distort actual colors.
eBay
Mini Optical Power Meter M5/M7/MC5/MC7 FTTH Handheld Fiber Optical Cable Test OPM -50~+26/-70~+10dBm With Network Test/LED Light
Aliexpress UK
Introduction of VU Meter 1. Adopting LED backlight, lower consumption and longer service life. 2. Stable and reliable performance, high-precision display. 3. The lighting is uniform and full, the brightness is consistent and can be adjusted by driver board. Introduction of Driver Board 1. Inspired by classical meter drive circuit, using professional op amp. 2. Sensitivity of left and right channel can be adjused independently. 3. The brighness of backlight LED can be adjusted to provide both better visual effects and longer service. 4. Using anti-interference design to prevent the pointer bottoming when VU meter starts. Perfect DIY kits, the best choise to DIY VU meter for all kinds of headphone amp, preamp, amplifier etc.
eBay
100 Meters/10M Diameter 2.4~25.4mm 3:1 Ratio Adhesive Lined Heat Shrink Tubing Waterproof Wire Wrap Insulated Lined Cable Sleeve
Aliexpress UK
specifications Volume: 95.7mm x 95.7mm x 51mm/3.77inch x 3.77inch x 2inch(L*W*T) Model: 96 Net Weight: 171g Working Range:AC 0~500V Graduation: 20V With blots and screw for fixing. Package Content:1 X Voltage Gauge.
eBay
1 meter Promotion high bright side glow transparent solid core optical fiber cable 1~14mm diameter
Aliexpress UK
MULTIPURPOSE - The analog panel ammeter applies to display panels and large switch panels installed in various control systems and power distribution systems.WHAT YOU GET - The package comes with an ammeter and some mounting parts that measure: Ammeter Panel: 1.8x1.8inch(L*W); Thread Size: 0.18inch; Mount Size: 1.5x1.5inch(L*W)RELIABLE MATERIAL - The case of this ammeter is made of clear plastic, you can read the scale clearly.SPECIAL DESIGNED - Model: SO-45; Measuring Range: AC 0-3A; Accuracy of Class: 2.5KINDLY NOTE - Do not knock or shake the ammeter.
eBay
EU FR 433Mhz Wireless Smart Socket 16A 220V RF Remote Control Plug,50 meters Remote,Electrical Outlet for Home Appliance ON/OFF
Aliexpress UK
Color: White. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
eBay
28.400-29.300MHz POTATO shortwave AM transceiver kit walkie-talkie 10-meter radio AM radio CB machine
Aliexpress UK
The zero point of the scale is usually placed at the leftmost end of the dial. - Scale Range: 50uA 200uA 500uA 1mA 5mA 20mA 50mA 100mA 500mA 1A 2A 3A 5A 10A 20A 30A 20A 30A.
eBay
Handheld Optical Power Meter 5-30MW Fiber Optic Tester Pen VFL Red Light Optical Fiber Optic 5-30km Visual Fault Locator
Aliexpress UK
Size: 71 60.7mm(L W).
eBay
Beige 5/10/20 Meters Vintage Electrical Wire Hemp Rope Woven Textile Wire Twisted Cable Braided Wire Retro Pendant Light Line
Aliexpress UK
Measures amper range of 0-50uA with accuracy of Class 1.5.Clear and easy to read scale and a button for fine tuning the dial.Needle Ampere Panel Meter for electronic applications, or other current measurement devices.
eBay
Original NISSEI RS-70 Digital SWR/Power Meter HF 1.6-60MHz 200W M Type Connector RS70 Launch for Walkie Talkie Two Way Radio
Aliexpress UK