Hand-Held Digital Multimeter The GDM-300/400 Series Hand Held DMM are a compact, high precision, battery operated multimeter series designed to meet of service engineers. The GDM-300/400 Series design is driven by mobileoriented features: automatic power off to preserve battery life, a large backlight display for crisp viewing, a rotary selector and push buttons to ease operation, and temperature measurement for outdoor use. The basic functions match the depth of bench-top multimeters: fuse-protected current input, true RMS for accurate AC measurements, Auto ranging, Duty cycle, and Relative mode. These compact, reliable, and economical devices are ideal for any engineer. SPECIFICATIONS DC VOLTAGE Input Impedance AC VOLTAGE Range Best Accuracy GDM-451/356/350B Input Impedance GDM-356 Range Best Accuracy BASIC T & M INSTRUMENTS DIMENSIONS & WEIGHT 220A, 2200A, 22mA, 220mA, 10A(GDM-461); 2mA, 20mA, 200mA, 20A(GDM-451) 400A, 4000A, 40mA, 400mA, 4A,10A(GDM-397); 2000A, 20mA, 200mA, 10A(GDM-350B) 400A, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396); 20mA, 200mA, 20A(GDM-356) (0.5%rdg + 10 digits) for GDM-461; (0.5%rdg + 5 digits) for GDM-451 (1.0%rdg + 2 digits) for GDM-397/394/396/350B; (0.8%rdg + 1 digit) for GDM-356 GDM-461 GDM-451 GDM-397 GDM-396 GDM-394 GDM-395 GDM-356 GDM-350B GDM-451 FEATURES * 4 1/2 Digits Manual Ranging * Temperature Measurement * Capacitance, Frequency Measurement * Data Hold * Auto Power Off GDM-356 FEATURES * 3 1/2 Digits Manual Ranging * Temperature Measurement * Capacitance, Frequency Measurement * Data Hold * Auto Power Off 220A, 2200A, 22mA, 220mA, 10A(GDM-461); 20mA, 200mA, 20A(GDM-451/356) 400A, 4000A, 40mA, 400mA, 4A,10A(GDM-397) 400A, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396) (0.8%rdg + 10 digits) for GDM-461/451; (1.2%rdg + 5 digits) for GDM-397 (1.5%rdg + 5 digits) for GDM-394/396; (1.0%rdg + 3 digits) for GDM-356 Best Accuracy TEMPERATURE Range Best Accuracy GDM-350B FEATURES * 3 1/2 Digits Manual Ranging * Temperature Measurement * Continuity Beeper/Diode Test * hFE Test * Data Hold Good Will Instrument Co., Ltd. 220 ~ 220M 7 ranges(GDM-461); 200 ~ 200M 7 ranges(GDM-451/356) 400 ~ 40M 6 ranges(GDM-394/395/396/397); 200 ~ 20M 6 ranges(GDM-350B) Best Accuracy (0.5%rdg + 10 digits) for GDM-461; (0.3%rdg + 1 digit) for GDM-451 (1.0%rdg + 2 digits) for GDM-394/396/397; (2.0%rdg + 5 digits) for GDM-395 (0.8%rdg + 1 digit) for GDM-356; (0.8%rdg + 5 digits) for GDM-350B CONTINUITY BEEPER Buzzer sounds if conductance less than 70 for GDM-451/394/395/396/356 Buzzer sounds if conductance less than 10 for GDM-461/397/350B DIODE TEST GDM-461/451/397/356 : 2.8V(Approx.); GDM-394/395/396 : 1.48V(Approx.) Open Circuit Voltage GDM-350B : 2.3V(Approx.) CAPACITANCE Range 22nF, 220nF, 2.2F, 22F, 220F, 2.2mF, 22mF, 220mF(GDM-461) 40nF, 400nF, 4F, 40F, 400F, 4000F(GDM-397); 2nF, 20nF, 2F, 20F(GDM-451) 40nF, 400nF, 4F, 40F, 100F(GDM-394/395/396); 20nF, 200nF, 2F, 100F(GDM-356) Best Accuracy (3.0%rdg + 5 digits) for GDM-461/397/396/394; (3.0%rdg + 40 digits) for GDM-451 (5.0%rdg + 10 digits) for GDM-395; (4.0%rdg + 3 digits) for GDM-356 FREQUENCY Range Simply Reliable GDM-461 FEATURES 87(W) x 180(H) x 47(D) mm, Approx. 370g (GDM-461/397) 85(W) x 177(H) x 40(D) mm, Approx. 330g (GDM-396/394) 80(W) x 165(H) x 38.3(D) mm, Approx. 275g (GDM-451/356) 72(W) x 137(H) x 35(D) mm, Approx. 200g (GDM-350B) 56(W) x 110(H) x 11.5(D) mm, Approx. 97g (GDM-395) * 22000 Counts Auto/Manual Ranging * 46 Segments Analogue Bar * * Data/Peak Hold and Relative Mode * True RMS/RS-232C ORDERING INFORMATION RESISTANCE Range GDM-350B GDM-395 SPECIFICATIONS 220mV, 2.2V, 22V, 220V, 750V(GDM-461); 2V, 20V, 200V, 750V(GDM-451/356) 40mV, 400mV, 4V, 40V, 400V, 750V(GDM-397); 4V, 40V, 400V, 750V(GDM-394/396) 4V, 40V, 400V, 600V(GDM-395); 200V, 250V(GDM-350B) (0.8%rdg + 10 digits) for GDM-461; (0.5%rdg + 10 digits) for GDM-451 (1.0%rdg + 3 digits) for GDM-397; (1.0%rdg + 5 digits) for GDM-394/396 (0.8%rdg + 3 digits) for GDM-356; (2.3%rdg + 5 digits) for GDM-395 (1.2%rdg + 3 digits) for GDM-350B 10M(3000M for mV range of GDM-461/397;4.5M for GDM-350B;2M for GDM-451) AC CURRENT Best Accuracy GDM-394/396 GDM-397 DC CURRENT Range E17 GDM-461 10Hz ~ 220MHz (GDM-461); 1Hz ~ 20kHz (GDM-451/356) 10Hz ~ 10MHz (GDM-394/396/397); 1Hz ~ 99.9kHz (GDM-395) (0.01%rdg + 5 digits) for GDM-461; (1.5%rdg + 5 digits) for GDM-451/356 (0.1%rdg + 3 digits) for GDM-394/396; (0.1%rdg + 4 digits) for GDM-397 (0.7%rdg + 3 digits) for GDM-395 22000 Counts Hand-Held DMM with True RMS Measurement and RS-232C Interface 4 1/2 Digits Hand-Held DMM 3 3/4 Digits Hand-Held DMM with RS-232C Interface 3 3/4 Digits Hand-Held DMM with True RMS Measurement and RS-232C Interface 3 3/4 Digits Hand-Held DMM 3 3/4 Digits Slim-Pocket DMM 3 1/2 Digits Hand-Held DMM 3 1/2 Digits Hand-Held DMM GDM-397 FEATURES * 3 3/4 Digits Auto/Manual Ranging * 41 Segments Analogue Bar * MAX/MIN, Data Hold and Relative Mode * RS-232C * Auto Power Off ACCESSORIES : User manual x 1 , Test leads , Battery FREE DOWNLOAD GDM-461 PC Software GDM-397 PC Software GDM-396 PC Software PC Software; Remote software (RS-232C/USB) PC Software; Remote software (RS-232C/USB) PC Software; Remote software (RS-232C) GDM-396/394 FEATURES SELECTION GUIDE MODEL Max. Display GDM-461 GDM-451 GDM-397 GDM-396 GDM-394 GDM-395 GDM-356 GDM-350B 22000 19999 4000 3999 3999 3999 1999 1999 Auto Ranging * 3999 Counts Auto/Manual Ranging * Continuity Beeper/Diode Test * Capacitance, Frequency Measurement * Data Hold and Relative Mode * True RMS/RS-232C (GDM-396 Only) Analogue Bar True RMS Display Backlight GDM-395 FEATURES Fused 10A Range Auto Power off DC Voltage 1000V 1000V 1000V 1000V 1000V 600V 1000V 250V AC Voltage 750V 750V 750V 750V 750V 600V 750V 250V DC Current 10A 20A 10A 10A 10A 20A 10A AC Current 10A 20A 10A 10A 10A 20A Resistance 220M 200M 40M 40M 40M 40M 200M Capacitance 220mF 20F 4000F 100F 100F 100F 100F 220MHz 20kHz 10MHz 10MHz 10MHz 99.9kHz 20kHz Frequency * 3999 Counts Auto/Manual Ranging * Slim Pocket Digital Multimeter * Continuity Beeper/Diode Test * Capacitance, Frequency Measurement * Data Hold and Relative Mode * Auto Power Off GDM-461/397/396/395/394 Best Accuracy 220mV, 2.2V, 22V, 220V, 1000V(GDM-461); 200mV, 2V, 20V, 200V, 1000V(GDM-451/356) 40mV, 400mV, 4V, 40V, 400V, 1000V(GDM-397); 400mV, 4V, 40V, 400V, 1000V(GDM-394/396) 400mV, 4V, 40V, 400V, 600V(GDM-395); 200mV, 2000mV, 20V, 200V, 250V(GDM-350B) (0.1%rdg + 2 digits) for GDM-461; (0.05%rdg + 3 digits) for GDM-451 (0.5%rdg + 1 digit) for GDM-397/356; (0.8%rdg + 1 digit) for GDM-394/396 (0.7%rdg + 3 digits) for GDM-395; (0.5%rdg + 2 digits) for GDM-350B 10M (3000M for mV range of GDM-461/397) BASIC T & M INSTRUMENTS Range GDM-451 20M Diode -40~1000 (1.0%rdg + 30 digits) for GDM-451; (1.0%rdg + 7 digits) for GDM-396/356 (1.2%rdg + 4 digits) for GDM-397; (1.0%rdg + 3 digits) for GDM-350B SPECIAL FUNCTION Auto Ranging(GDM-461/397/396/395/394); True RMS(GDM-461/396); RS-232C(GDM-461/397/396) hFE Test(GDM-350B); Display Backlight(GDM-451/397/396/394/356); Analogue Bar(GDM-461/397) LCD DISPLAY 22000 counts(GDM-461), 4 1/2 digits(GDM-451), 3 3/4 digits(GDM-397/396/395/394), 3 1/2 digits(GDM-356/350B) POWER SOURCE Single 9V Battery (6F22), Cell Battery for GDM-395 (CR2032) Continuity Temperature Duty Cycle (%) Transistor (hFE) REL Data Hold Peak Hold MAX MIN RS-232C Simply Reliable Good Will Instrument Co., Ltd. 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