Features: 1. Progressive Tone Stimulus- A shock stimulus if your dog continues to move closer to the boundary 2. Pulsed Proportional Stimulus - The closer your pet gets to the boundary, the more intense the shock 3. Power Boost Switch-The width of the warning can be adjusted by field width adjustment knob in the transmitter 4. Audio Wire Break Alarm- The system control center has an audible alarm to alert you if it senses a break in the wire or if the boundary system is not functioning correctly 5. Speed Detect Anti-run Through- The Laster your dog is moving, the quicker the higher level of intensity is issued 6. Visual Wire Break Alarm- The system control center will light spark if it senses a break in the wire 7. Quick Disconnect Terminals - quick and secure connection or disconnection of the wire to the control center 8. Low Battery Indicator - When the light on the collar is green, it is working properly.Red means time to replace the battery Specifications: 1. Material: Plastic 2. Dimensions: (4.21 x 1.25 x 4.64) inch / (10.7 x 3.2 x 11.8) cm (L x W x H) 3. Weight: 870g /30.68oz Package Includes: 1. Indoor wall-mounted transmitter x 1 2. Power plug x 1 3. Adjustable receiver collar x 1 4. 9 Volt batteries for collar x 1 5. Boundary wire of 300 meters x 1 6. Test bulb x 1 7. Extra metal contact points x 2 8. Training flags x 20Specification: Package Weight One Package Weight 1.21kgs / 2.66lb One Package Size 31cm * 20cm * 5cm / 12.2inch * 7.87inch * 1.97inch Qty per Carton 12 Carton Weight 11.50kgs / 25.35lb Carton Size 40cm * 31cm * 30cm / 15.75inch * 12.2inch * 11.81inch Loading Container 20GP: 716 cartons * 12 pcs = 8592 pcs40HQ: 1664 cartons * 12 pcs = 19968 pcs