aodelan camera wireless shutter release timer remote control for canon eos r, rp, rebel sl2, 250d, 750d, 90d, 80d, 77d, m6 mark ii, 5d mark iv; fujifilm x-t3, x-t100; olympus om-d e-m1 mark ii 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.<br> 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.<br><br> <b>specification</b><br> frequency: 2.4 ghz<br>range: 60 meter<br>working voltage: 3.0 v<br> standby timer: 48 hours<br> batteries: 4 x aaa batteries<br> 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)<br> weight: transmitter: approx. 56.5g (2.0 oz) (without batteries), receiver: approx. 37.5 g (1.3 oz) (without batteries)