AODELAN WTR-2 includes a Timer WTR-2(T) and a Receiver WTR-2(R). It works as a wireless timer and remote shutter release system with the Receiver connecting to the camera and the Timer controlling the receiver. Also, the Timer WTR-2(T) can work as a wired system with it connecting to the camera directly.
Besides the full functions of shutter release, it also features multiply timer functions: delay timer, long exposure timer, interval timer and as well as setting for the number of exposure; its timing setting can be accurate to 0.1 seconds. The WTR-2 is great for time-lapse recording of blooming flowers, astrophotography, etc.

Specification
Frequency: 2.4 GHz
Range: 60 meter
Working voltage: 3.0 V
Standby Timer: 48 Hours
Batteries: 4 x AAA batteries
Size: Transmitter: Approx. 130 x 46 x 22 mm (5.1 x 1.8 x 0.9 in), Receiver: Approx. 85 x 37 x 31 mm (3.3 x 1.5 x 1.2 in)
Weight: Transmitter: Approx. 56.5g (2.0 oz) (without batteries), Receiver: Approx. 37.5 g (1.3 oz) (without batteries)

Note: Please check the frequency of transmitter and receiver is matched if the wireless remote system doesn't work. To reset the smart code, please follow the procedures:
1. Turn on the transmitter and receiver.
2. Use a needle-like object to press into the code setting button on receiver, which will cause the LED on receiver to flash red and green light alternately for 25s. Press the shutter button on transmitter to reset the code during the code setting mode. When the code is successfully set, the LED on receiver will get back to normal mode, flashing green light.

A transmitter can control multiple receivers simultaneously. A receiver can receive signal from one transmitter only.