This Wireless Remote is designed for cameras that has a remote shutter socket. The system works at a 433MHZ frequency and has 16 available channels. In addition, this wireless remote system adopts a technology to allow the transmitter trigger the receiver without direct line of sight up to 30 meters. The transmitter can trigger the camera shutter at five modes: single shot, 5 seconds delay shot, 3 continuous shots, unlimited continuous shots and bulb shot/bulb lock. It works with selected Nikon cameras as below: D3100,D3200,D3300,D5000,D5100,D5200,D5300,D5500,D5600,D600,D610,D750,D780,D7000,D7100,D7200,D7500,D90,Df,Z7II,Z7,Z6II,Z6,Z5,Coolpix P7700,Coolpix P7800, Coolpix P1000 Important - How to use: 1. Install the CR-2 battery to the receiver and 23A battery to the transmitter. (Make sure to remove the plastic protective paper on the battery before installation) 2. Set the receiver and transmitter to the same channel (Normally the channel is already matched when you receive the package, so actually you don't need to set it, but if you ever reset the channel, make sure they are the same) 3. Once the batteries are properly installed and the channels are matched, when you press the shutter button on the transmitter, both the LED bulb on the transmitter and receiver will light up. (If not, please check if the battery is installed correctly or the battery is dead) 4. Once the transmitter matches the receiver, connect the receiver to the camera via the camera connecting cable which is included in the package, then set the transmitter into the working mode you want and finally press the shutter button to take a photo wirelessly.