What's in the box:

PT-04GY 4 Channels Wireless Remote Speedlite Flash Trigger Universal 1 Transmitter & 2 Receivers for Canon Nikon Pentax Olympus (Standard)

Features:
This set consists of a signal sender and two receiver trigger.
Universal hot shoe interface, compatible with Canon, Nikon, Sigma, Olympus, Pentax, etc. (except Minolta SONY, for they use a special hot shoe).
Globally univeral 433Mhz frequency, 4 channels.
With studio flash interface, can trigger several kinds of studio flashes.
Transmitting distance up to 30M, no limits with directions or angles.
1/4" nut can be connected with tripod or light holder to make flashlight safe and stable.
Energy-saving design with 12V 23A battery of transmitter and 2 * AAA batteries(not included) of receiver.
Comes with a PC sync cord for cameras without hot shoe socket.


Note: This trigger do not support TTL function.

Specifications:
Power of transmitter: 23A 12V mini battery(included)
Power of the receiver(AC): 2 * 1.5V AAA Alkaline Battery(not included)
Outdoor working distance: max. 30m / 90feet (open area, no fraise)
Indoor operating distance: max. 25m / 75feet
Channel: 4 channels
Frequency: 433Mhz
Synchronous speed: Max. 1/250sec
Color: black
Material: metal + plastic
Package size: approx. 10 * 8.5 * 5cm / 3.9 * 3.4 * 2.0in
Package weight: 113g / 4.0oz

Package Lists:
1 * 4-channel Transmitter
2 * 4-channel Receivers
1 * PC Sync Cord(2.5mm to PC)
1 * User Manual(English)

Note:
This item only includes the trigger set and sync cord.