Question 1

Can I use more than one type of pad? What pads are recommended?

Accepted Answer

Thanks for your question, of course you can use more than one type of pad at the same time. 
AUVON TENS Unit is compatible with all the electrode pads with a 2mm pin connector, regardless of their shape, size or brand, so you can use a pair of 2” pads in Channel A and use a pair of 2” x 4” pads in Channel B. 
For the recommended areas of different pads, the 2” pads are suitable for small areas like joints, and the 2” x 4” pads are good for your shoulder, as for the 4” x 8” pads, they are the best for your back. 
If you have any questions or suggestions about the AUVON products, please feel free to contact the customer service via support@iauvon.com, thanks for your support and understanding.

Question 2

I need a unit that will do eight pads (four per channel). Will this unit do that, or do you make another that will? Also, where do I buy the lead wire

Accepted Answer

Thanks for your question. This TENS unit is a dual channel unit which only does 4 pads at the same time. 
But if you need a unit that will do 8 pads, then we have a newer version which allows 8 pads to be used at the same time, you can find it on AUVON Amazon store page. 
If you want to buy more lead wires or you have any questions about our products, please contact our customer service via support@iauvon.com, we will try to solve your concerns, thanks for your support and understanding.

Question 3

is this unit American Made

Accepted Answer

No, it states on the bottom that is is made in China.

Question 4

Do you have to have the gel to work?

Accepted Answer

Thanks for your question! No, you don’t have to add the gel to the pads before use.
The pads that come with the TENS device are sticky, so there is no need to add more gel to the surface which is cost-effective to save your money to buy gel.
If you want to maintain the stickiness of your pads or want to know more about how to use the pads, please feel free to contact our customer service via support@iauvon.com, we will try to solve your concerns, thanks for your support and understanding.

ASIN	B07D58V8LD
Batteries	1 Lithium Ion batteries required. (included)
Best Sellers Rank	#3,977 in Health & Household ( See Top 100 in Health & Household ) #2 in Muscle Stimulators & Accessories
Customer Reviews	4.6 4.6 out of 5 stars (43,714)
Date First Available	July 4, 2018
Item model number	AS8012
Manufacturer	AUVON
Product Dimensions	4.12 x 2.24 x 0.43 inches; 1.54 pounds

Dual Channel TENS Unit Muscle Stimulator Machine with 20 Modes, 2" and 2"x4" TENS Unit Electrode Pads

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