OptionFinder® SR Audience Response Wireless Keypads
Technical Specifications for Wireless Keypad Model
OptionFinder SR 1100K
Enclosure
Lightweight, compact, blue A.B.S. plastic molded enclosure.
Dimensions: 6.7” L x 3.1” W x 1.5” H.
Weight: 8.0 ounces.
User Input
Soft-touch sealed membrane switch panel with 12 tactile keys.
0 through 10 plus reset key
Display
Seven-segment LED provides response entry confirmation and is visible in reduced-lighting conditions.
Power and Power Management
Powered by a commonly available 9-volt alkaline battery and internally regulated to 5 volts for consistent performance throughout the life of the battery. Keypad is using power only when transmitting an entered response.
Battery provides sufficient power for 10,000+ responses before requiring replacement.
User Identification
Each keypad has a unique address between 1 and 250 and a radio frequency (RF) channel number. Combining this “address” feature with a special response verification routine provides additional security. Keypads operate independently of each other and keypad addresses are programmable.
Individual pads can be password-protected to preserve configurations.
RF Technology
Proprietary radio communication system provides reliable, barrier-free operation between keypads and their associated OptionFinder SR Base Station. Integrated error-checking ensures accurate communication of responses.
A 345 MHz RF keypad transmitter sends keypress information to the Audience Response Base Station’s receiver. This transmitter is frequency-synthesized and frequency-modulated. Multiple channels provide installation flexibility. Includes three external antenna for maximum range.