Epson EX21 - Manual (Page 83)

Technical Specifications 83
Humidity
(non-condensing)
Operating: 20 to 80% RH
Operating altitude 0 to 7500 ft (0 to 2286 m);
over 4921 ft (1500 m), enable
High
Altitude mode in the Extended menu
(see page 50)
Safety and Approvals
United States FCC 47CFR Part 15B Class B (DoC)
UL60950-1 First Edition (cTUVus
Mark)
Canada ICES-003 Class B
CSA C22.2 No. 60950-1
Pixelworks ™ DNX ™ ICs are used in this projector.