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September 29, 2006

Advanced Technology Acquisition Corp.

14 A Achimeir Street

Ramat Gan 52587 Israel

Re: Advanced Technology Acquisition Corp. (“Company”)

Gentlemen:

Each of the undersigned hereby waives his/its right to exercise conversion rights with respect to any shares of the Company’s common stock owned by the undersigned, directly or indirectly, and agrees that he/it will not seek conversion with respect to such shares in connection with any vote to approve a business combination (as is more fully described in the Company’s Prospectus relating to the Company’s initial public offering).

 

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Very truly yours,
M.O.T.A. Holdings Ltd.
By: /s/ Moshe Bar-Niv
Name: Moshe Bar-Niv
FSGL Holdings Ltd
By: /s/ Yehoshua Gleitman
Name: Yehoshua Gleitman
OLEV Holdings Ltd
By: /s/ Liora Lev
Name: Liora Lev
Shrem, Fudim, Kelner - Technologies Ltd.
By: /s/ Itschak Shrem; Hilla Zisapel
Name: Itschak Shrem; Hilla Zisapel
Title: Chairman and CEO; General Counsel
Shrem, Fudim, Kelner & Co. Ltd.
By:  /s/ Itschak Shrem; Hilla Zisapel
Name: Itschak Shrem; Hilla Zisapel
Title: Chairman; General Counsel and Deputy CEO
Josef Neuhaus Ltd
By: /s/ Josef Neuhaus
Name: Josef Neuhaus
/s/ Elisha Yanay
Elisha Yanay
/s/ Avigdor Kaplan
Avigdor Kaplan