Enclosure

• Each handheld wireless keypad is housed in a lightweight, compact charcoal ABS plastic moulded enclosure which accommodates 2 keyboard designs, Elastomeric (rubber) or Tactile (membrane)
• The dimensions of the keypad are; Height-15cm, Width-6cm, Depth-2.4cm
• Weight 140 grams

User Input

• 15 keys. Ten numeric keys for entering multiple-choice responses and 3 "soft" keys available for special use input
• Input can be "speed scored" to 0.05 second resolution to identify the "fastest finger" during competitive events

Display

• Seven segment LED is easy to read in all lighting conditions
• Display shows user entry plus confirms when the base station accepts the keypads input

User Identification

• Each keypad has an address and a channel identity which are user programmable
• Each keypad also has a unique device serial number which is permanent and set during manufacturing
• Both the address and serial number may be transmitted with each keypads response

RF Technology

• Two-way RF keypad uses eligible licence free/licence exempt frequencies for communicating key presses to the Base Station and receiving from the Base Station control information and keypad input acknowledgements
• System runs on 2.4GHz frequency hopping spread spectrum transceivers
• User entries are acknowledged when received by the base station
• Permits Reply systems to operate reliably in the presence of other RF devices
• Integrated error checking discriminates system signals from all other RF traffic to ensure data accuracy and enhance security
• Internal antenna is protected by the keypad enclosure

Range

• Spread spectrum technology is designed to operate in an indoor area 150 x 150 metres
• A room's geometry and RF propagation characteristics will influence actual range experienced. Elevating the base station often results in a performance advantage

Capacity

• 250 keypads per base station channel identity
• Stock configuration: Default. 15 identities available for 3,750 keypads per room/site
• Arena configuration: Non-stock, special terms and pricing apply. Up to 72 identities for 18,000 users per venue

Speed

• Adjusted by base station
• Default setting is 100 keypads per second. Polling rates are adjustable and can achieve _ second speed in smaller groups (<50)
• Time stamping identifies keypad input sequence in group's order of response

Power and Power Management

• Powered by two standard AA batteries (not included)
• Keypad powers down after each response to conserve battery life
• Battery life is 10,000 responses or battery shelf life, whichever comes first
• Low battery indicated on display. Also keypad can transmit a warning to the base station

Communications Security

• A proprietary response4 verification protocol integral to the radio design provides a high degree of signal security
• Frequency hopping and proprietary data communications are additional deterrents to clandestine interception

Scalability

• Firmware resides in high performance microprocessor chips that can be reprogrammed to facilitate easy upgrade during the life of the product
• Adding keypads to an existing system requires them to be set to unused addresses. No change is required on the base station when adding keypads of the same channel

Compliance and Patents

• FCC, IC, CE certified
• U.S Patent Nos. Re.35,449;5,724,357;6,021,119;6,665,000 European patent No. EP 0 697 773. Other U.S and foreign patents and patents pending

Reply WW Base station

• A compact and programmable interface to your PC. Controlled by value-added software purchased separately
• Dimensions: Width-6.5", Height-2.25", Depth-5"
• Unit weight: 8 ounces (Add 5 oz for cable)
• Capacity: 250 keypads per channel identity
• Stock version: 15 identities allows 3,750 pads per room
• Arena version: Special terms and pricing apply. Up to 72 identities allows up to 18,000 pads per room
• Speed: base station polling cycles are adjustable to optimise speed to group size. For example, a group of 50 keypads can be polled every one-half second, whereas a group of 3,750 keypads can be polled every 2.5 seconds
• Connections: Attaches to the operator's PC by USB connection. (USB cable included)
• Power source: USB. Current draw 50mA