Check the listing for details. Digital Ac Voltage Frequency Meter Ac 80500v Voltmeter 4565hz Frequency Counter. Color: Black, Condition: New. Listed at 20.05 USD. Proshopping Digital AC Voltage Frequency Meter, AC 80-500V Voltmeter 45-65Hz Frequency Counter, LED Display Voltage Gauge, Mini Volt Hz Monitor Tester, High Voltage Panel Indicator -for Generator, RV 2 in 1 AC voltage frequency meter - can automatically detect and display the accurate real-time voltage (V) and frequency (Hz) simultaneously Universial volt Hz monitor - wide voltage measuring range AC 80-500V; frequency measuring range 45-65Hz; high working efficiency of 2 times/s measuring speed Sensitive digital LED screen display - the small voltage dectector with a upgrade clear and bright LED display, LCD; Low working power consumption Easy to use - 2 wires design, just connect directly with your device, it can test automatically, without extra power supply; can embedded buckle installation, more stable Multifunctional application - Only suitable for Pure AC45-65Hz mains supply, can't be used for measuring circuit of square wave, inverter output and sine wave. (It can't be used for measuring the AC power converted from a DC power with an inverter); perfect for different modes of gasoline engine generator, diesel engine generator, motor and RV This AC voltage frequency meter can atuo detect the real time voltage and frequency. Perfect meter to monitor RV or home generator and shore power. Just what you need to add-on for your generator. It's a good reminder. Wide working voltage range, AC 80-500V Frequency measuring range 45-65Hz Two wires design Easy to use, connect two wires directly, the meter can automatically detect the accurate real-time voltage and frequency " Clear and bright LED digital display, much LCD Low power consumption Small size and portable, very convenient Widely used in different modes of gasoline engine generator, diesel engine generator, motor and RV Technical Parameters: Working voltage: AC 80-500 V Working frequency: 45-65 Hz Measurement speed: 2 times/s Measuring Accuracy : 1%±2 digits Operating Temperature: -10～+50℃ / 10℉~122℉ Operating Humidity: 10～80%(no condensation) Working Pressure: 80～106kPa Display: LED displayer(Red&Green) Material: ABS Product dimensions(WxDxH):2.75"x1.18"x1.57"/ 7x3x4cm Net weight:1.3oz/36g Usage tips: Application: This meter is only suitable for pure AC 45-65Hz power supply, can not be used for square wave, inverter output and modify the sine wave sine wave circuit measurement (it can't be used for measuring the AC power converted from a DC power with an inverter), otherwise the meter will damaged! Install method: you can dirrectly connect two wires to the tested voltage to measure voltage and frequency . Package includes: 1 x AC voltage frequency meter Shipping We offer FREE shipping on all orders! We ship within Three business days of payment, usually sooner. We use a selection of shipping services such as UPS, FedEx, USPS etc., unable to choose a carrier. We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed. Sellers generally can’t change the shipping address that you provided at checkout. Local pickups and combined shipping options are not provided at this time. International buyers - please note: Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility. Return You can return a product for up to 30 days from the date you bought it by using the seller's FREE RETURN LABEL only. Any product you return must be in the same condition you received it and in the original packaging. 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