Transmitter(Remote control):

Operating voltage: DC12V (23A/12V battery x1)
Transmitting frequency: 433MHz
Encoding Type: Fixed code
Receiver sensitivity: > -105dB
Transmission distance : 100M (Open field)
Size: approx 55*28*10mm

Receiver:

Operating voltage: AC 75V - 240V DC 9-72V
Output voltage = Operating voltage
Operating frequency: 433MHz(Same with Remote control)
Encoding Type: learning code(you can buy extra 315MHz remote controllers for this receiver)
Rated contact current of relay: 15A/240VAC, 15A/110VAC
Box size: approx 65 x 45 x 28mm

Please notice that:

Although the relay is marked 30A 240VAC. The 30A is for the peak current of your load. The rated current of your load should less than 15A.

About Learning and clearing Method:

Input 12V for the Receiver ,
Momentary: press the Learning Button 1 time. the Led indicator flash 1 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Toggle: press the Learning Button 2 time. the Led indicator flash 2 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Latched: press the Learning Button 3 time. the Led indicator flash 3 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Delay time (5S): press the Learning Button 4 time. the Led indicator flash 4 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Delay time (10S): press the Learning Button 5 time. the Led indicator flash 5 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Delay time (15S): press the Learning Button 6 time. the Led indicator flash 6 time, Then press transmitter, the Led indicator flash for 3 times, learning successfully.
Clearning: Press the Learning button 8S . Until the receiver Led indicator flash for 3 times and OFF, it mean Clearing Code