electronic equipment: https://allegro.pl/oferta/akumulator-aa-r6-ni-mh-2600mah-1-2v-recyko-gp-14293846621

• Measurement range 4 × 90° (i.e. full 360° range through four segments of 90°). 
• Resolution +/- 0.05° and accuracy +/- 0.2°. 
• Built-in two laser lines (model E) to support the visual positioning of the components. 
• Double magnetic base (bottom and back) for stable adhesion to metal surfaces. 
• Built-in 1000 mAh Li-ion battery with USB-C charging, operating time approx. 8 hours.

• Industrial endoscope with 4.3" HD screen (1280×720), real image preview
• Flexible camera cable with CMOS sensor, diameter 8 mm, field of view 70°, length 1 m
• 8 LEDs with four-level brightness control – illuminate tight and dark areas
• IP67-rated housing: dust-proof, water-resistant, ready for harsh environments
• Ergonomic grip, user-friendly interface, image rotation, zoom, contrast/color mode adjustment
• Powered by Li-ion battery (3.7 V, 2000 mAh), autonomy ~6 h, charging via USB-C (5 V/1 A), charging indicator

• Compact and lightweight design – convenient to carry in your pocket or tool bag.
• High accuracy of measurements in a wide range of voltages and currents.
• Support USB-A and USB-C in one device.
• The data recording function allows the long-term charging process to be analysed.
• Simple operation – simply connect the tester between the power source and the receiver.

wireless doorbell without unnecessary cables or batteries
45 different melodies to choose from
4 volume levels - up to 85dB
Range: 30m indoors, 100m outdoors

• DC voltage: 400mV~4~40~400~600V
• AC voltage: 4V~40~400~600V
• resistance:400Ohm~4kOhm~40~400kOhm~4MOhm~20MOhm
• temperature: -40~300C
• Checking the continuity of the circuit

• 12V / 24V Battery Tester With Battery Test, Starting And Charging Functions
• Supports 3-250 Ah batteries, CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE standards
• Four-wire technology (Kelvin) – precise measurement, protection against reverse polarity and voltage
• Easy-to-read 128×64 LCD display; Indicators: Voltage, Resistance, Health/Capacity
• Built-in safety features, easy operation, EN/CN menu – ready to use from the vehicle battery

• built-in 1800 mAh battery
• 3000V glaring grid
• LCD display
• safe for health
• UV light to attract insects
• USB-C docking station

• LED Voltage Measurement Indicator
• Phase sequence test
• Single phase voltage detection
• Continuity test
• Test RCD
• Polarity detection: positive and negative