I own an Innova 3300 that over estimates voltages, 9V PS reads 10.5, 12V reads 13.8, 3.7V battery reads 6.24 what can I be doing bad??

A 12 volt car battery when fully charged is 12.6 to 12.7 and reading of 12 volts is considered dead. AGM batteries read a little higher

Can I use this to test the thermal fuse on my dryer?

Yes, I recently used it to test a thermal fuse in a popcorn maker.

Is this sensitive enough to allow me to determine the voltage on my doorbell wiring (16 volt vs. 10 volt vs. dead)?

Yes! My son used it for a science project that measured the amount of electricity fruit generated and it worked wonderfully.

what kind of battery does it use?

Standard 9V rectangular battery with snap on connections

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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3300

Product ID: 1139254

Details

Brand
Innova
Color
Black
Item Weight
4 ounces
Power Source
Battery
Style
3300

⚡10 MegOhm circuitry for sensitive electronics

🔋Accurate battery & charging system diagnostics

🖐️Hands-free design with wrist band & stand

289292Ar

Duties & taxes included

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Sold byAmazon MadagascarDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Master your circuits, hands-free and hassle-free!

VERSATILE POWERHOUSE - Perfect for automotive, household, and hobby electrical testing
COMPACT LIGHTWEIGHT - Only 4 ounces—carry it anywhere without the bulk
HANDS FREE EFFICIENCY - Wrist-mounted band and stand let you multitask with ease
SENSITIVE CIRCUITRY GUARD - 10 MegOhm input prevents damage to delicate automotive electronics
PRECISION MEETS PROTECTION - UL certified for safe, reliable troubleshooting every time

The Innova 3300 is a UL certified, lightweight digital multimeter designed for both automotive and household electrical troubleshooting. Featuring 10 MegOhm circuitry to protect sensitive electronics, it offers hands-free testing with a wrist band, stand, and lead holders. Ideal for professionals and hobbyists alike, it delivers precise diagnostics for batteries, wiring, breakers, and more.

Specifications

ASIN	B001O1X65A
Best Sellers Rank	#128,400 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #188 in Multi Testers
Brand Name	Innova
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (1,436)
Global Trade Identification Number	00042173033003
Included Components	Hands-Free DMM / 10 MegOhm
Item Dimensions	10 x 5.1 x 1.5 inches
Item Type Name	Multimeters & Analyzers
Item Weight	4 ounces
Manufacturer	INNOVA
Measurement Type	Multimeter
Minimum Operating Voltage	1.5 volts_of_direct_current
Model	3300
Number of Items	1
Part Number	3300
Power Source	Battery Powered
Specification Met	UL
Style Name	3300
UPC	787461651100 042173033003
Unit Count	1 Count
Warranty Description	1 Year Limited

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