I received the product in good visible conditios and started to assemble as the specifications with great detail and precission. When I connected the power supply the circuit didn't work and can't measure any frequency. After many reviews and checks I noticed that the LDO 7559A-1 (5 volts regulator that supports 5V to 30V volts input) was very hot and the output voltage was 3.3 volts., connected with 5 volts USB from PC. I connected the circuit by less than 5 seconds to a 9 volts power supply, and the regulator output was 7,5 volts. and I disconnected quickly. I retired the 7550A-1 regulator and shortcuted the input-output of the regulator. Then I connected the circuit to de USB 5 volts power supply from PC and the circuit works propperly. Thank you Banggood for the commercial solution. All in all, the product is excellent and Banggood always offers the best solution for any trouble. Thank you Banggood

I received the product in good visible conditios and started to assemble as the specifications with great detail and precission. When I connected the power supply the circuit didn't work and can't measure any frequency. After many reviews and checks I noticed that the LDO 7559A-1 (5 volts regulator that supports 5V to 30V volts input) was very hot and the output voltage was 3.3 volts., connected with 5 volts USB from PC. I connected the circuit by less than 5 seconds to a 9 volts power supply, and the regulator output was 7,5 volts. and I disconnected quickly. I retired the 7550A-1 regulator and shortcuted the input-output of the regulator. Then I connected the circuit to de USB 5 volts power supply from PC and the circuit works propperly. Thank you Banggood for the commercial solution. All in all, the product is excellent and Banggood always offers the best solution for any trouble. Thank you Banggood

I received the product in good visible conditios and started to assemble as the specifications with great detail and precission. When I connected the power supply the circuit didn't work and can't measure any frequency. After many reviews and checks I noticed that the LDO 7559A-1 (5 volts regulator that supports 5V to 30V volts input) was very hot and the output voltage was 3.3 volts., connected with 5 volts USB from PC. I connected the circuit by less than 5 seconds to a 9 volts power supply, and the regulator output was 7,5 volts. and I disconnected quickly. I retired the 7550A-1 regulator and shortcuted the input-output of the regulator. Then I connected the circuit to de USB 5 volts power supply from PC and the circuit works propperly. Thank you Banggood for the commercial solution. All in all, the product is excellent and Banggood always offers the best solution for any trouble. Thank you Banggood

Sometimes you need a precise way to get a frequency reading to ensure that your equipment is calibrated for accuracy. I use mine to make sure my R.F. Signal Generator is tuned to the correct frequency.

Sometimes you need a precise way to get a frequency reading to ensure that your equipment is calibrated for accuracy. I use mine to make sure my R.F. Signal Generator is tuned to the correct frequency.

Sometimes you need a precise way to get a frequency reading to ensure that your equipment is calibrated for accuracy. I use mine to make sure my R.F. Signal Generator is tuned to the correct frequency.

assembly went well, simple to follow instructions. small form factor. might be better if an adjustment for calibration could be added. such as trim of clock osc., otherwise very satisfied with this product.

assembly went well, simple to follow instructions. small form factor. might be better if an adjustment for calibration could be added. such as trim of clock osc., otherwise very satisfied with this product.

assembly went well, simple to follow instructions. small form factor. might be better if an adjustment for calibration could be added. such as trim of clock osc., otherwise very satisfied with this product.

He got here pretty quick. It's an interesting assembly kit. I haven't had time to assemble it yet, but the kit promises to be good. The price is fine. It comes with a transport box and you can see the circuit. See how it goes.

Llegó bastante rápido. es un kit de montaje interesante. Aun no he tenido tiempo de montarlo, pero el kit promete ser bueno. El precio esta bien. Viene con una caja transporte y se ve el circuito. Aver que tal va.

He got here pretty quick. It's an interesting assembly kit. I haven't had time to assemble it yet, but the kit promises to be good. The price is fine. It comes with a transport box and you can see the circuit. See how it goes.

He arrived fast, all well packed. It worked the first time. Thank you very much!

Llegó rápido, todo bien embalado. Funcionó a la primera. Muchas gracias!

He arrived fast, all well packed. It worked the first time. Thank you very much!

A leírásnak megfelelően működik

A leírásnak megfelelően működik

A leírásnak megfelelően működik

This requires a 4.5v signal to operate.

This requires a 4.5v signal to operate.

This requires a 4.5v signal to operate.

Bon appareil pour petit projet.Tres bien.

Bon appareil pour petit projet.Tres bien.

Bon appareil pour petit projet.Tres bien.

Good quality product for price! would recommend!

Good quality product for price! would recommend!

Good quality product for price! would recommend!

Nice kit for the small e-laboratory

Schöner Bausatz für das kleine e-Labor

Nice kit for the small e-laboratory