5Pcs DIY Frequency Tester 1Hz-50MHz Crystal Counter Meter With Housing Kit

Features:
Measurable frequency range: 1Hz to 50MHz. 
Measurable signal frequency: up to 30V. 
Can measure most commonly used crystal of oscillation frequency. 
Five-digit accuracy resolution. 
Automatic range switching. 
Programmable frequency setting for measuring radio transceiver equipment. 
Selectable power-saving mode, if there is no significant change in 15 seconds automatically turn off the display frequency. 
Wide power supply range, you can use a common USB interface power supply, can also use an external power supply or 9V battery 5-12V

Note:

This is a DIY kit, you need to have some knowledge of electronics and ability.

Package included:

5 x DIY kit. 
5 x Transparent housing