Classroom Response Systems

General specs 

Detail of specs:

1. Dimensions of LCD: 25mm * 15mm 
2. 2.4GHz digital RF technology 
3. LCD display
4. 4 radios channels
5. 11 Activity modules
6. Support Self-Paced-Response
7. Support Multi-Correct-Options
8. ID Address Programmable
9. Power required: two 1.5 volt batteries
10. Transmission distance: > 100 meters
11. Battery life: > 1 to 2 years for ordinary use
12. High Speed - 100 audience keypads transmission < ONE second   (similar products may require 5 seconds or more).
13. Super-Wide-angle signal transmission: 360 degrees angle
14. ID number changeable (compare to the obsolete ID setting mode of similar products), No need to keep a large stock of student remote. (For resellers)
15. Support cascade and uplink option
16. Support up to 999 audience keypads (enhanced version)
17. Easy to install, easy to use
18. Plug-in software of MS PowerPoint
19. Multifunctional instructor remote
20. USB port or 232 port connection
21. Third party software supportable

about student remote:

1. 2.4GHz digital RF technology 
2. LCD display 
3. 4 radios channels
4. 11 Activity modules
5. Support Self-Paced-Response
6. Support Multi-Correct-Options
7. ID Address Programmable
8. Power required: two 1.5 volt batteries (alkalescent battery will be better)
9. Transmission distance: > 100 meters
10. Transmission angle: 360 degree
11. Battery life: > 1 to 2 years for ordinary use
12. Durable and not easily breakable, will not break or damage even drop to the cement ground from 5 meters high
13. Easy to use
14. Up to 999 remote controllers can be used at once (enhanced version)
15. WDT reset support automatic program reset feature
16. Weight:0.042 kg

about receiver:

1. 2.4GHz digital RF technology
2. 4 radios channels
3. Color: black, opaque
4. Port: USB port or 232 port
5. Weight: 0.4kg
6. Operating Temperature: 0-40 degree
7. Operating Relative Humidity: 0-90%
8. Power required: DC12V, 800MA adapter or no required
9. Operating Power: <1mw
10. Receiving angle: 360 degree
11. Receiving distance: 100 meters radial
12. Asteroid-link option
13. High processing speed - 999 audience keypads'   transmission < 5 second
14. One receiver support up to 999 student keypads
15. Easy to install - use one RJ-45 cable for data & power
16. Weight:0.175kg