["Features:\r\nFrequency range: 1Hz-75MHz (in fact, it can work up to 78MHz). \r\nFour-digit or five-digit display resolution (for example, x.KHz xxx, x.xxx.MHz, or xx.xxMHz). \r\nAutomatic switching range with different gate times. \r\naddition or subtraction of programmable frequency offset. \r\nInput impedance: 1.1 for M, parallel to about 10pF. \r\nInput sensitivity: Typically less than 20mV RMS from 1Hz-100KHz, rising to 35mV at 20MHz and 75mV at 50MHz (150mV at 78MHz). \r\nCurrent consumption: 50mA with 7 to 9 V input. \r\nOptional (configurable) power-saving mode that automatically shuts off the display if the frequency does not change significantly within 15 s. \r\n\r\nSpecifications:\r\nType: DIY Kit\r\nFrequency Range: 1Hz-75MHz\r\n50MHz Input Impedance: 1.1M, Parallel with about 10PF\r\nResolution: Max. 1Hz\r\nCurrent Consumption: 50mA with 7 to 9V Input Jack\r\nSocket of Input: BNC\r\nDisplay: Digital LED Display\r\nPCB Size: 80x58mm/3.15x2.28\"\r\nQuantity: 1 Set\r\n\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nNo Retail Package\r\nPackage Contents:\r\n1 Set x Frequency Meter DIY Kit\r\n\r\nList Of Materials:\r\nResistors (0.25 for W , 1%):\r\n8 x R1-R8 1 k \r\n2 x R9, R15 10 k \r\n1 x R10 100 k \r\n1 x R11 1 for M \r\n1 x R12 220 \r\n1 x R13 56 k * according to the different batches of C3355, the resistance can change \r\n1 x R14 470 \r\nCapacitors:\r\n1 x C1 470n Polypropylene \r\n1 x C2 100 p Ceramics \r\n2 x C3 C5 100n Polypropylene \r\n1 x C4 47u Electrolytic \r\n2 x C6, C8 10u Electrolytic \r\n1 x C7 6-40 p Variable \r\n2 x C14, C15 22 p Ceramic \r\nIntegrated Circuits:\r\n1 x U1 PIC16F628A (Programmed) + 18pin IC socket \r\n1 x U2 LM1117-5V SMD \r\nTransistors\r\n1 x Q1 C945 \r\n1 x Q2 J310 \r\n1 x Q3 C3355 \r\nDiodes:\r\n6 x D1-D6 1N4148\r\n1 x D7 1N5819 \r\nVarious:\r\n1 x J1 SIL Socket & header 16Pin\r\n1 x J2 BNC socket\r\n1 x J3 DC_CZ_ZM socket adapter DC\r\n1 x switch button SW1 AN_SW\r\n1 x switch button SW2 SW2X2\r\n1 x 1 Crystal 20 MHz\r\n2 x SG1 7-segment 2-digit display common cathode Red\r\n1 x SG3 7-segment 1-digit display common cathode Red\r\n1 x PCB Main\r\n1 x PCB display\r\n2 x Copper pillar + + Spring screw Washer"]