The UV Light in the Roblox survival horror game Residence Massacre is an active defensive tool exclusive to Night 2 (the Factory). It costs $30 at the factory's Delivery Service terminal and is primarily used to repel the Stalker before it rampages, stun the Mutant during indoor chases, and temporarily neutralize skeletons during the Graves modifier.
Each UV Light unit comes with three distinct charges before it breaks and disappears from your inventory. Because inventory stock and charges are strictly limited, knowing when and how to trigger its purple flash is critical to surviving until 6:00 AM.
Residence Massacre UV Light Overview and Stats
The following table summarizes the verified stats, costs, and availability of the UV Light based on game data:
| Attribute | Details |
|---|---|
| Availability | Night 2 (The Factory) only |
| Purchase Location | Factory Delivery Service terminal (middle section) |
| Pickup Location | Exterior delivery crate dropped by drone near the factory entrance |
| Cost | $30 in-game currency per unit |
| Nightly Stock | 2 units (increases to 3 during the Graves Modifier) |
| Total Uses | 3 flashes per device |
| Primary Targets | The Stalker, The Mutant (Larry), Skeletons (Graves Modifier) |
| Visual Appearance | Cuboid grey-and-black device with 3 purple bulbs and a rear handle |
How to Get the UV Light in Night 2
You cannot scavenge the UV Light as loose floor loot inside the factory. Instead, you must purchase it through the automated delivery system using money earned during your shift.
- Earn Cash: Complete pressure release tasks on wall panels scattered throughout the factory. Correctly interacting with broken panels awards $5 each time.
- Order from Delivery Service: Head to the computer terminal in the middle section of the factory. Select the UV Light from the store catalog for $30.
- Retrieve the Crate: Exit through the front doors to the exterior landing area near the entrance fence. A delivery drone drops a supply crate containing your ordered UV Light.
- Manage Stock: The terminal stocks a maximum of two UV Lights under normal conditions. Once both are bought and delivered, the item goes out of stock for the rest of the night (unless the Graves Modifier is active, which raises the cap to three).
How the UV Light Works Against Anomalies
Equipping the UV Light and clicking or tapping charges the device briefly, emitting a directed purple flash. Its effectiveness varies depending on which anomaly you face and what state that monster is in.
1. Countering The Stalker
The Stalker begins emerging from floor cracks after 2:00 AM across four potential spawn points: the entrance, office area, storage room, and back right room.
- Emerging State: When you spot black goo bubbling from a floor crack and see the Stalker rising, flashing it with the UV Light immediately scares it off. It will sink back down and despawn, resetting its spawn cycle and keeping the factory clear.
- Rampage State: If the Stalker fully emerges, it begins teleporting through rooms, draining your health whenever you look at it. While flashing a rampaging Stalker does not stop its passive gaze damage, it stuns the monster and disables its instant-kill contact hitbox, allowing you to run past it through tight hallways without dying.
2. Stunning The Mutant (Larry)
Added in the Halloween 2024 update, the UV Light can target the Mutant directly inside the factory corridors:
- Flashing the Mutant stuns it in place for roughly three seconds.
- This flash provides a reliable escape window if you run out of stamina or get cornered away from doors.
- However, because the stun causes noticeable separation, the Mutant's AI may recalculate its pathfinding and loop around from another corridor to cut you off. Use the stun to reach safety or loop through the office, but do not linger.
3. Skeletons (Graves Modifier)
When the factory graveyard is enabled under the Graves modifier, skeletons will dig out of the ground behind the facility at 12:00 AM, 2:00 AM, and 4:00 AM.
- The UV Light no longer outright kills skeletons.
- Instead, flashing a skeleton causes it to collapse into a temporary ragdoll state on the floor.
- While it leaves the enemy docile for a short period, the skeleton will eventually stand up and resume hunting players. Given your three-charge limit, save UV charges for emergency getaways rather than routine crowd control.
Associated Badges and Event Mechanics
Using the UV Light unlocks specific achievements and triggers seasonal mechanics during special events:
- Not Today Badge: Awarded by flashing the Stalker with the UV Light while it is actively spawning from a crack. Doing so unlocks the "Snake Eyes" vanity hat.
- Shopping Spree Badge: Unlocked by purchasing all available stock from the Night 2 Delivery Service, which requires buying out the supply of UV Lights alongside other tools.
- Christmas Lights Event Drop: During Christmas events, scaring away the Stalker using a UV Light (or camera flash) causes it to drop a bundle of Christmas Lights on the floor crack. Players can use these lights to decorate the factory's three bare pine trees to earn the Holiday Hero badge.
Frequently Asked Questions
Can you use the UV Light in Night 1 or Night 3?
No. Official game records and community item databases confirm the UV Light is an exclusive item available only in Night 2 (the Factory). It does not appear in the residential house during Night 1 or Lakeview Camp during Night 3.
Does the UV Light recharge over time?
No. The UV Light cannot be recharged or refueled with batteries. Once all three flashes have been used, the item breaks and is permanently removed from your hand. You must purchase a second unit from the delivery terminal if stock remains.
Should you buy Cameras or a UV Light first?
Most solo and duo factory strategies prioritize placing three surveillance cameras at the main Stalker crack locations (storage, entrance, and lower rooms) and holding a UV Light in hand to monitor the office crack and defend against emergency Mutant encounters. Cameras provide stationary one-time flashes via the tablet, while the handheld UV Light offers flexible mobile defense.
