Technical Specifications for Wireless Keypad Model CRS4200:
Note: Reply EU is a discontinued model
Enclosure
Each wireless keypad is housed in a lightweight, compact, and rugged A.B.S. plastic molded enclosure.
Dimensions: 17 cm L x 7.9 cm W x 3.8 cm H.
Weight: 215 grams.
User Input
Soft-touch sealed membrane switch panel with 12 tactile keys.
Ten keys are numbered 1-10. Additional key markings include A-E on keys 1-5, and Yes and No on keys 1-2. Clear and user-defined asterisk keys provide additional functions.
Display
Seven-segment LED displays user input and is extremely visible, even in reduced lighting conditions.
A proprietary acknowledgement feature is integrated with the display to show the status of data delivery as well as verify the acceptance of each keypad entry by the Base Station.
Power and Power Management
Powered by a 9-volt battery and internally regulated to 5 volts for consistent performance throughout the life of the battery.
Keypad is using power only when transmitting and acknowledging an entered response.
Low battery is indicated by the rapidly flashing seven-segment LED display when about 100 responses are remaining. Also, keypad transmits a warning to the Base Station.
Battery provides sufficient power for 10,000+ responses before requiring replacement.
User Identification
Each keypad has a unique radio frequency (RF) address between 1 and 650. Combining this address feature with a patented response verification method provides additional security.
Keypads operate independently of each other, and keypad addresses are programmable. Additionally, keypads may be password-enabled to protect configuration.
RF Technology
Proprietary radio communication system provides secure, barrier free operation between keypads and their associated base station.
User entries are acknowledged when received by the base station.
Integrated error checking ensures accurate communication of responses and control functions.
Compact radio transceiver (transmitter/receiver combination) processes address/control signals from the Base Station and sends keypress information to the Base Station on 433.92 MHz.
Communications to/from the Base Station are crystal referenced.
Receiver is SAW referenced superheterodyne design with phase lock detection for superior sensitivity, stability, and selectivity.
Internal antenna is protected by the keypad enclosure.
Range
The system is designed to provide reliable operation in an area 100 meters by 100 meters.
Range can vary due to a rooms geometry and RF propagation characteristics. Performance may be improved by elevating the base station and/or positioning it in the center of the group.
Speed
The Base Station scans each keypad in rapid fire sequence. Scan duration is 1/100th of a second. Within each brief time slice, the Base Station simultaneously determines a keypads identification and processes/acknowledges its response information.
This look, listen, verify routine is both intelligent and fast. Polling cycles are adjustable to optimize speed to group size. For example, a group of 50 keypads can be sampled every one half second, whereas an audience of 650 per room/site can be sampled every 6 seconds.
Control
Utilizes a high performance microprocessor and external permanent memory for storage of setup parameters and keypad addresses.
Firmware is resident in the microprocessor chip, which can be replaced to facilitate easy upgrade during the life of the product.
Capacity
650 keypads per radio channel.
Adding keypads to an existing Base Station requires them to be set to new, unused addresses. No change is required on the Base Station when keypads of the same radio channel are added.
Extract from Reply manuals
Replyฎ is a registered trademark of Fleetwood Group, Inc.
ฉCopyright 2005 Fleetwood Group, Inc.,