Guangzhou City Qile Technology QLRFM21X User Manual

Audience response system Module QL-RFM21X

Compliance
This device complies with Part 15 of the FCC rules. Operation is subject to the
following
two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference
that may cause undesired operation.

Changes or modifications to this module not expressly approved by Guangzhou
City Qile Technology Co., Ltd. may void the user’s authority to operate this
module.

NOTE: This module has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation.
This module generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this module does cause
harmful interference to radio or television reception, which can be determined
by turning the module off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

• Reorient or relocate the receiver or clicker units.

• Increase the separation between the equipment and the product.

• Connect the affected equipment into an outlet on a circuit different from that
to which the receiver’s computer is connected.

• Consult your Qile service representative or an experienced radio TV
technician for help.

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1:Introduce

The Audience response system Module QL_RFM21X can be used as a
drop-in subsystem component. The designer never has to care about things like
impedance matching or soldering fine pitch devices.

This module is restrict

ed to battery-operated devices with two 1.5 V DC

batteries.

2.Pin definition and diagram

Pin Number Signal
1 GDO1/SO
2 SCLK
3 SI
4 RX/TXDATA(GDO0)
5 GND
6 VDD
7 NC
8 NC
9 GDO2
10 NC
11 CSn
First place the module with the antenna on top and with the connector close to
your body, then the most left pin is pin #1.

2