Connects tears with electricity that damages enemies.
The electricity's damage is equal to Isaac's Damage.
The electricity deals 30% of Isaac's Damage, 15 times per second, for a total of 4.5 times his damage per second.
A tear can generate one connection. The tear does not generate another connection even after the connection is lost. However, other tears can still make connections with it.
Each of Isaac's tears can connect to other allied tears Including those of shooting familiars.
The number of connections is limited by the number of Isaac's tears.
Notes
When playing as Jacob and Esau, the tears of the brother who picked up the item will also connect to those fired by his brother. For example, if Jacob picked up the item, his tears will connect to each other as well as to those of Esau, but Esau himself will not fire any electric tears.
Synergies
Anti-Gravity: All of the tears fired are connected by electricity, creating a series of electric fences.
Apple! / Tough Love: The damage of the electricity can be multiplied by the items. This occurs independently from the tears which generated the electricity.
Evil Eye: Tears fired by eye will be connected via electricity to Isaac's tears.
Eye of the Occult: Allows you to move the electrified tears, allowing you to hit more enemies and do more damage.
Haemolacria: Main tears and bursts can be connected via electricity.
Pop!: Tears in midair and tears that knock around each other will still be connected, effectively creating electric barriers and letting the electricity hit multiple times.
Proptosis: Triples the electricity damage. Has no penalty with range.
Sinus Infection: Boogers will have electricity flowing between them even if attached to the same enemy, dealing massive damage to bosses.
Sulfuric Acid / Terra: The lasers are capable of destroying terrain, but are unable to apply knockback, allowing them to easily destroy large quantities of obstacles.
Tiny Planet: Creates moving laser fields that orbit the character.
The Wiz: The diagonally-spreading tear shots will be connected by electricity, effectively making up for the item's blind spot and providing an attack with a very wide range.
Interactions
The following items override Technology Zero. Tears from other sources such as Lead Pencil can still generate electricity with each other.
Trisagion: Tears from other sources can be connected with the base of Trisagion's blast.
Continuum: Tears will travel through walls; however, the electricity will not connect the tears while they are outside the room. If a tear was connected before it pass through a wall, it will not be connected after passing through, limiting the efficiency of the combination.
Flat Stone: Tears lose their connection as they bounce. As such, tears cannot make connection to another tear once they bounce, but other tears can make connection to them.
Strangely, this item has the tech item tag, and therefore contributes toward its own unlock, though this should be impossible under normal circumstances.
The electricity's damage is equal to Isaac's Damage.
The electricity deals 30% of Isaac's Damage, 15 times per second, for a total of 4.5 times his damage per second.
Jacob and Esau, the tears of the brother who picked up the item will also connect to those fired by his brother. For example, if Jacob picked up the item, his tears will connect to each other as well as to those of Esau, but Esau himself will not fire any electric tears.
Anti-Gravity: All of the tears fired are connected by electricity, creating a series of electric fences.
Apple! / 
Tough Love: The damage of the electricity can be multiplied by the items. This occurs independently from the tears which generated the electricity.
Cricket's Body / 
Compound Fracture / 
The Parasite: Split tears will be connected via electricity.
Evil Eye: Tears fired by eye will be connected via electricity to Isaac's tears.
Eye of the Occult: Allows you to move the electrified tears, allowing you to hit more enemies and do more damage.
Haemolacria: Main tears and bursts can be connected via electricity.
Pop!: Tears in midair and tears that knock around each other will still be connected, effectively creating electric barriers and letting the electricity hit multiple times.
Proptosis: Triples the electricity damage. Has no penalty with range.
Sinus Infection: Boogers will have electricity flowing between them even if attached to the same enemy, dealing massive damage to bosses.
Sulfuric Acid / 
Terra: The lasers are capable of destroying terrain, but are unable to apply knockback, allowing them to easily destroy large quantities of obstacles.
Tiny Planet: Creates moving laser fields that orbit the character.
The Wiz: The diagonally-spreading tear shots will be connected by electricity, effectively making up for the item's blind spot and providing an attack with a very wide range.
Lead Pencil can still generate electricity with each other.
Brimstone
Dr. Fetus
Epic Fetus
Mom's Knife
Technology
Tech X
Trisagion: Tears from other sources can be connected with the base of Trisagion's blast.
Continuum: Tears will travel through walls; however, the electricity will not connect the tears while they are outside the room. If a tear was connected before it pass through a wall, it will not be connected after passing through, limiting the efficiency of the combination.
Flat Stone: Tears lose their connection as they bounce. As such, tears cannot make connection to another tear once they bounce, but other tears can make connection to them.
The Binding of Isaac: Rebirth
