Specification Brand : Walfront BulletPoint1 : With Microchip's PIC16F648A, 2.4 GHz frequency meter.Circuit is simple and reasonable structure, two-button control, simple BulletPoint2 : Using temperature-compensated voltage controlled crystal oscillator (2.5 ppm VC-TCXO).Unique gate control and time algorithm (non-timed interrupt). BulletPoint3 : frequency design, value and IF / down mode can be preset separately. BulletPoint4 : Single-ended input design, three-channel frequency measurement (low channel / high channel / Auto Channel). BulletPoint5 : Using eight 0.56 inches high brightness digital display, eight adjustable brightness. Color : red ExternallyAssignedProductIdentifier1 : 783335647620 ExternallyAssignedProductIdentifier2 : 0783335647620 ItemName : Walfront PLJ-8LED-H 0.11000MHz Frequency Counter Frequency Meter Tester Module (Backlight Font Red) ItemPackageDimensions_Height : 17.4 centimeters ItemPackageDimensions_Length : 2.1 centimeters ItemPackageDimensions_Width : 12.3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : voltage-testers Manufacturer : Walfront Material : Other MeasurementType : Hertz MinimumOperatingVoltage : 9 volts_of_direct_current ModelNumber : PLJ-8LED-H PartNumber : Wal frontq4z5ng108i-01 PowerSourceType : Battery Powered ProductDescription : Specification: Model:PLJ-8LED-H Type: Backlight font red, Backlight font blue(Optional) Gate time: 0.01 S, 0.10 S, 1.0 S Measurement channels (channels are low impedance): - Low channel: Measuring range: 0.1 MHz ~ 60 MHz Accuracy: ±100Hz (0.01 1s gate time), ±10Hz (0.1 seconds gate), ±1Hz (1.0 seconds when the gate) Low channel sensitivity:0.1MHz ~ 10MHz: better than 60mVPP, 10MHz ~ 60MHz: better than 60mVPP, 60MHz ~ 75MHz: Not tested - High channel (divided by 64): Measuring range: 20MHz ~ 2.4GHz Accuracy: ±6400Hz (0.01 seconds gate), ±640Hz (0.1 1s gate time), ±64Hz (1.0 1s gate time) High channel sensitivity:20MHz ~ 30MHz: better than 100mVPP, 30MHz ~ 60MHz: better than 50mVPP, 60MHz ~ 2.4GHz: not tested IF settings: Independent double-IF design, adjust the minimum frequency step of 100Hz,frequency range 0 ~ 99.9999MHz, can be set to increase or decrease the IF frequency mode. Frequency reference: Using 5032 package 13.000MHz Warming voltage controlled crystal oscillator (VC-TCXO), frequency stability of ± 2.5 ppm. Operating voltage: DC Input: DC 9V ~ 15V (with reverse polarity ) Current: Maximum 160mA (test conditions: 1. DC12V power supply; 2.red LED; 3. eight brightness) Eight LED display, the highest display eight digits. Eight LED brightness is adjustable, factory set to maximum brightness. Physical Dimensions,Length x width x height: 125.5mmx25.5mmx21.5mm Component quality 46g (NW) Onboard Interface: DC IN (Power Interface): HX2.54-2P socket ICSP (programming interface): 2.54-6P Pin Weight: Approx.47g/1.7oz