What is the Otis test tool? GAA21750AK3? GAA21750AK2?

There are lots of Otis test tools on the market, and this article will help you know the difference.

Ok, there have 4 kinds of Otis test tools on the market:
1, GAA21750S2 
2, GAA21750AK2
3, GAA21750AK3 
4, GAA21750AK4 

And at first, we can see the photos of these Otis test tools:
1,GAA21750S2

black one




2, GAA21750AK2

blune one



3, GAA21750AK3

Still blue one



4, GAA21750AK4

Blue


So it's hard to differentiate only based on the appearance.

And the detail difference as follows:

OTIS Elevator Test Tool
JF code	OTEL0030	OTEL030105	OTEL0002L	OTEL21750AK3
Item	OTIS Elevator Test Tool （Black)	OTIS Elevator Test Tool(blue)	OTIS Elevator Test Tool(blue)	OTIS Elevator Test Tool(blue)
Brand	OTIS	OTIS	OTIS	OTIS
Specification	OTIS Elevator Test Tool （Black)	OTIS elevator test tool 2008 type(blue)	OTIS Elevator Test Tool(blue)	The latest OTIS Elevator Test Tool(blue)
Size	GAA21750S2 can not using for GECB board, even reading	GAA21750AK2 Can Used on all the otis elevator but GECB board; Can read GECB boar, but can not change the arguments	GAA21750AK3 can use for all kinds of otis lift even inculde GECB board, can using 65000times, and it have to send back to refresh when the 65000 times is used up	GAA21750AK4 is final version one, it can use for all kinds of otis lift even inculde GECB board, and it's real no limited times;
P/N	GAA21750S2	GAA21750AK2	GAA21750AK3	GAA21750AK4
Times	No time limited	No time limited	65000 tims	No time limited
Price	Very very cheap	cheap	moderrat cost	moderrat cost
Delivery time	3 working days after the payment
HS code	8431310001
Net weight	0.7kg
MOQ	1pcs
Optional accessory	Black bag
Warranty-Time	1 years
JF’s expert: Jiefeng E&E CO.,LTD the biggest elevator and escalator parts supplier and trader in China. JF’s products: We are supplying all kinds of elevator and escalator parts for Mitsubishi, OTIS, LG-Sigma, KONE, Schindler, Toshiba, Fujitec, Hyundai, Hitachi, ThyssenKrupp and some Chinese brands, such as KOYO, STEP, BLT, we also supplying the Mechanical parts here, like Rollers, door shoes, door header, Step Chain, Escalator step, Escalator handrail, Escalator comb plate, Escalator yellow cleats, etc. JF’s guarantee: We are offering 12month guarantee for our spare parts here and guarantee its Origin and all the parts will be testing before delivery to make sure its working conditions, if any parts in poor quality, we will take it our and exchange it at our cost here! JF’s Payment term: T/T or PayPal JF’s Quality control: All Parts to be tested here for delivery. Email: jill@elevator.hk; Jieson@elevator.hk; jiefeng02@elevator.hk;

GAA21750S2 (Black one)

Can Used on all the otis elevator but GECB board, even can not read;

GAA21750AK2 (Blue one)

Can Used on all the otis elevator but GECB board;

Can read GECB boar, but can not change the arguments;

GAA21750AK3 (Blue one)

It can use for all kinds of otis lift even inculde GECB board, can using 65000times, and it have to send back to refresh when the 65000 times is used up;

GAA21750AK4 (Blue one)

This is final version one, it can use for all kinds of otis lift even inculde GECB board, and it's real no limited times;

Feature:

1, GAA21750AK2 suit all type of otis lift model which produce before 2008 year and most otis lift model which produced after 2008 but some otis special model which produced after 2008 year which is not sell in chinese market  it may can not use. Totally this tool is better than otis TT GAA21750S2 black color;

2, GAA21750AK3 compare with EUROPE type: the Europe type type need refresh on otis webiste after 200 times, and we have the no time limited, it can be used until the tool is broken, and it can be used on 65000 times in theoretically;

3, GAA21750AK4 can use for all Otis lift, and it's real no time limited