Ascom 914T

Standard Features
Robust and shock resistant
 24 characters alphanumerical
Up to 120 characters in one message
Up to 10 messages (max. 480 characters)
Silent mode - Vibrator (option)
Rechargeable battery (standard AAA sized)
Time stamp of messages
7 individually programmable beep signals
Unread message audible indication
Out of range warning

Physical
Size (h× w × d):   86 × 51 × 19 mm
Weight:   84 g incl. battery
Colors:  Steel Grey / Ice White
Display:   LCD Dot matrix
Clip:   Hinge-type (standard) or swivel-type

Environmental
Operating temperature:   -10°C to +55°C
Storage temperature:   -20°C to +70°C
Enclosure protection:  IP40, EN60529

Free fall test: 
IEC 60068-2-32, procedure 1, Dropped 12 times from 1 meter
Free fall text (ATEX/IECEX):  IEC 60079-0, Dropped 4 times from 1 meter

Also available:
ATEX / IECEX classification as option 1