TW-283 is a type of multi-functional shutter remote control. Before operating this Timer Remote Control, please read the User Manual completely and save this manual for future use.Batteries - Please use four new batteries - Please install batteries correctly to the compartment according to the + and - terminal of the batteries.Please refer to your camera manual and connect the Receiver with the correct remote socket of camera. Make sure the cable is inserted to the end for good contact.This shutter control may not be able to fire the camera if the connecting cable is NOT inserted to the correct remote socket or not inserted to the end.Channel - The Transmitter and Receiver must be setted to the same channel.If the number of shots you want to take is less than 99, it is not needed to set Repeat Timer (REPEAT & N2).Please see the images of this product. There are some instructions shown in the images. Specification: System mode: FSK 2.4GHz wireless control systemCommunication channel: 30 channelTransmission distance:over 80mTransmitter Stand-by Time:over 1000hrs. (with 2 pcs AAA batteries)Receiver Stand-by Time:over 400 hrs(with 2 pcs AAA batteries)Transmitter Dimension (LxWxH): 146X40X19mmReceiver Dimension(LxWxH): 73x38x31mmWeight: Transmitter: 52.6g (excluding batteries) Receiver: 36.2g (excluding batteries) Package included: TW-283 Transmitter X 1TW-283 Receiver X 1Shutter Connecting Cable X 1User Manual X 1(Batteries are no include) Refer to "+" / "-"within the transmitter's and receiver's battery compartments to insert the batteries. The receiver flash as red LED light;If the light doesn't flash,it should be the battery reversed the direction. TW-283 is a type of multi-functional shutter remote control. It is indispensable for take picture of starry sky and night view. It has the function of simple single shoot, one second continuous shoot, Bulb shoot, the customized delay shoot and Timer plan shoot. With the low power consumption, you are clear about the use condition and the timer plan. Function： 1. TW-283 supports simple single shooting, 1S continuous shooting, [ BULB ] shooting, delay shooting and timer schedule shooting.2. Delay Shooting Setting can set delay time and shooting number, the delay time alters from 1s to 59s, shooting number alters from 1 to 99.3. Timer Schedule shooting time can be set from 0 sec to 99hrs59mins59sec. Shooting number can be set from 1 to 99.4. Available to control different brand’s cameras and models by changing different camera connecting cable.5. The transmitter and receiver adopts LCD screen which is more easy and simple to handle.6. Using FSK module and 2.4GHz global free frequency range, its reliability and stability are improved. For Canon XT, XTi, XS, XSi, T1i, T2, T2i, T3, T3i, T4, T4i, T5, T5i, T6i, T7i, T6, SL1, SL2, EOS R, 2000D, 1300D, 1200D, 1100D, 1000D, 800D, 760D, 750D, 700D, 650D, 600D, 550D, 500D, 450D, 400D, 350D, 300D, 200D, 100D, 60D, 60Da, 70D, 77D, 80D, M5, PowerShot G1X, G1X Mark II, G1X Mark III, G3 X, G5 X, G10, G11, G12, G15, G16, SX60 HS, SX50 HS TW-283-E3