Features Versatile Application: Ideal for use in electronic measuring instruments, traditional manufacturing areas, metrology latories, and wireless communication testing, providing reliable frequency measurement in various fields. Counting: Recognizes analog count, backward count, and count phases, offering accurate and flexible counting function for different applications. Customizable Options: Adjustable counting speed, optional relay, and collector open output, providing flexible and customizable solutions to meet specific requirements. Time Delay Function: Supports over 10 types of relays for selection and features time delay action relay, enhancing al efficiency and control. Advanced Technical Parameters: Compatible with 5V and 24V DC voltage, with the ability to set 1.5x magnification and display a wide range of magnification, making it suitable for diverse technical setups. Features: 1、APPLICABLE SCENARIO: Frequency meter can be used in electronic measuring instruments; Traditional manufacturing areas, metrology latory, wireless communication testing and other fields 2、COUNTING FUNCTION: Digital countdown timer recognizes the built in analog count, backward count, and count phases 3、FLEXIBLE AND OPTIONAL: Frequency meter counting speed is optional, optional relay, collector open output, closed memory power supply 4、TIME DELAY OUTPUT: Frequency counter meter supports more than 10 relay types for selection, and has the function of time delay action relay 5、TECHNICAL PARAMETERS: External sensor counter for 5V, 24V DC voltage, can be set 1.5x magnification, to determine the ratio between the count and display magnification range 0.0001？9.9999 Specification: Item Type: Intelligent Digital Frequency Meter Ambient Temperature: 22℃ Technical Index: 1. Measurement Accuracy: ±0.1%, Reading: ±1 word 2. Display Mode: 0.56 red LED 3. Four digit reading 4. Display Refresh Rate: >3 Times per second 5. Working Power Supply: AC DC8-24V, 40mA 6. Over Range Display: "1" or" -1" is displayed in the first place, and the last three digits are not displayed Function: 1. Input Pulse Signal: NPN PNP collector open circuit, switch, non switch, level pulse 2. Input Signal Voltage: Low Level: -30V-0.6V, High Level: 4-30V 3. Measuring Range: Frequency: 9999Hz, 999.9hz, 99.99khz three levels, automatic switching selection 4. Maximum Input Frequency: 10KHz, 100khz, 300khz Package List: 1 x Frequency Meter 1 x Connecting Wire Package List 1 x Frequency Meter 1 x Connecting Wire