Ling-T3A 433.92 MHz ASK/OOK Remote-Control Transmitter Module

Ling-T3A transmitter module dimension photograph

100–1,000 · MOQ 100US$1.28per module

1,001–10,000US$1.18per module

10,001+ · Volume orderRequest quoteFor production quantities

Typical applications

For compact ASK/OOK remote-control transmitters.

Ling-T3A provides the transmitter side of a learned remote-control link for switches, alarms, appliances, toys and other battery-powered controls.

Remote controls

Build compact handheld or key-panel transmitters with four active-high key inputs.

Wireless switches

Send encoded key commands to a compatible learned receiver.

Security & alarms

Use discrete key values for alarm, call and security-control triggers.

Appliances & toys

Integrate short-range remote-control functions where an on-board antenna is preferred.

System operation

Key input in. Encoded RF command out.

Pair the transmitter with a compatible Ling-R1-series receiver and validate the final enclosure, battery and RF environment.

Keys or controllerFour active-high inputsK0–K3

→433.92 MHz
ASK/OOK link

Compatible receiverLing-R1 seriesSwitch or serial output

System boundary: Ling-T3A transmits an FB1527-encoded RF command. The receiver’s ordered operating mode determines the output behavior.

Frequency433.92 MHz

ModulationASK/OOK

EncodingFB1527

Voltage2.2–5.5 V

Power10 dBm typical

TX current8 mA typical

StandbyBelow 1 µA

Key inputs4 · 15 values

Technical specifications

Selection data from Datasheet V2.1.

Use the released datasheet for final circuit, antenna clearance and complete-product decisions.

Operating frequency433.92 MHz

ModulationASK/OOK

EncodingFB1527 · built-in random 20-bit address code

Operating voltage2.2–5.5 V · 3.0 V typical

Transmit current8 mA typical at 3 V

Standby currentBelow 1 µA

Output power10 dBm typical maximum

Frequency deviation±30 kHz typical

Key inputs4 active-high inputs · up to 15 combined values

Operating temperature−30 to +80 °C

AntennaOn-board antenna

Pins & key values

Four active-high key inputs.

Use isolation diodes for combined key inputs to prevent crosstalk.

Pin assignment

GND: Power ground; connect to system ground.
K0–K3: Active-high key inputs. K0, K1, K2 and K3 correspond to key values 0x08, 0x04, 0x02 and 0x01.
VCC: Positive supply, 2.2–5.5 V; 3.0 V typical.
LED: External LED connection as shown in Datasheet V2.1.

Key behavior

Single key: Each input sends its assigned FB1527 key value while asserted.
Combined key: The transmitted value is the sum of the individual key weights.
Pairing: Use with a compatible Ling-R1-series receiver; receiver pairing and output behavior are receiver-side.
More keys: For more keys, use the product architecture and receiver mode specified in the datasheet.

Integration notes

Protect the RF and key-input environment.

Final range and reliability depend on the completed transmitter, receiver and installation.

Power & I/O

Use 3 V or 3.3 V where practical and place a 0.1 µF decoupling capacitor near VCC.

Do not apply a voltage above VCC directly to key-input or external LED circuits.

Antenna & EMC

Keep the on-board antenna away from metal, batteries, large copper areas, shields and high-noise loads.

Test co-channel interference, range and final enclosure performance before mass production.

Technical downloads

File for evaluation and design-in.

Ling-T3A Datasheet V2.1

Technical specifications, key values, pin functions and integration recommendations.

Download Datasheet ↓

Which receiver modules work with Ling-T3A?

Use compatible Ling-R1-series receiver/decoder modules. Confirm the ordered receiver mode and final system behavior before purchase.

Does Ling-T3A require an external antenna?

No. Ling-T3A uses an on-board antenna. Keep the antenna area clear in the completed product.

Can it transmit several key values?

Yes. The four key inputs support individual and combined values; use isolation diodes for combined-key wiring.

What voltage should the key inputs use?

Key inputs are active-high and must not receive a voltage above VCC directly.

Purchase options

Order modules or start with a development kit.

Transmitter module