Our Services
Douglas Security System (DSS) repairs and installs intercoms, security cameras, access control systems, smart locks, roof alarms, and door strikers, and we run network cable throughout the tri-state area. We’ve been doing this work in New York for over 35 years, from our office at 1541 E 46th Street in Brooklyn.
Most of our calls come from property managers, co-op boards, landlords, and homeowners who need something fixed fast or want to upgrade an old system. We handle both. Every job starts with a free quote, and we only recommend a replacement when a repair doesn’t make sense for your building.
Below you’ll find each service we offer, the brands we install, how our process works, and answers to the questions we hear most. For prices and legal requirements, see our intercom cost guide and NYC intercom requirements. If you’d rather talk to someone, call us at (212) 262-2820.
A dead buzzer or a lobby panel that won’t release the door is more than an inconvenience. Tenants can’t let in guests or deliveries, and the building may be out of compliance. Under the NYC Housing Maintenance Code, buildings with eight or more apartments built or converted after January 1, 1968, must keep a working intercom with two-way voice and door release. That’s why we treat intercom repair calls as urgent.
We repair existing intercoms of every age, including older 5-, 4-, and 3-wire audio systems, Aiphone GT and IP series, Comelit, Elvox, Leedan, and 2Easy systems. The most common problems we fix are:
A DSS technician tests the system from the entry panel to the apartment units, finds the failed part, and gives you a price before any work starts. Most single repairs, like replacing one apartment unit or fixing a door release, cost about $250 to $600. Replacing an entry panel or power supply usually runs $500 to $1,500. These are average NYC prices, and your final price depends on what we find. We carry common parts like the PK-543A intercom amplifier and handset-style apartment stations, so many repairs are done in one visit. Read our full guide to intercom repair in NYC.
Buzzer ringing but the door won’t open? See door buzzer repair in NYC.
When the intercom goes down, a few quick checks help us fix it faster:
In the meantime, put up a note with a phone number so visitors and deliveries can still reach tenants.
If your intercom is old, keeps breaking, or is audio-only, an upgrade usually costs less over time than repeated repairs. We install brand-new video intercom systems, both Wi-Fi and hardwired, in apartment buildings, co-ops, offices, and private houses.
For many buildings, we can upgrade to video without new wiring. Our Comelit video intercom works alongside your existing intercom units, so tenants keep their apartment units and can also see and talk to visitors on their cellphones. That keeps the job faster and more cost effective.
With a modern system, you and your tenants get:
Most of our Comelit systems are a one-time investment with no monthly payment. On Comelit video intercom installs, we offer a 3-year guarantee on Comelit material and a 1-year guarantee on service and labor. We also install Aiphone GT Series multi-tenant systems, DNAKE smart intercoms, Akuvox, and ButterflyMX. See the Comelit Ultra Touch entry panel and our full intercom product list.
See our full guide to video intercom installation in NYC.
No two buildings need the same system. Before we recommend anything, we look at how many units you have, how old the wiring is, who uses the entrances, and how you want to manage access.
If you’re not sure what fits, we’ll walk the property with you and explain your options in plain words, with prices for each.
We install HD and IP camera systems for residential houses and commercial properties. A good camera system helps you see who comes and goes, check on deliveries, and hand clear footage to the police or your insurance company if something happens.
Every camera system we install is planned around your property. We walk the site, pick camera spots for entrances, lobbies, hallways, parking areas, and storefronts, and choose the right lens for each view. Then we run the cable, mount the cameras, set up the recorder, and connect everything to your phone.
For buildings that need more, we install cameras with human and vehicle detection, and facial recognition with a compatible NVR, like the PAR 4MP turret camera and the PAR 2MP bullet camera. We also install Invid security camera systems.
Access control lets you decide who gets in, and when, without handing out keys. It’s a good fit for apartment lobbies, office suites, storefronts, gyms, and back doors that see a lot of traffic.
We install and repair keypads, key fob readers, card readers, and door strikers, and we connect them to your intercom when it makes sense. With a keypad like the Aiphone AC-10S, you can set up to 100 codes. With a cloud system, you can add or remove users from your phone and see a log of every entry.
We work with Linear access control systems, DoorKing entry panel systems, ButterflyMX, and Aiphone access products. If a key fob is lost or a tenant moves out, access can be turned off in minutes instead of changing the locks.
We install security locks and smart locks for apartments, offices, and retail spaces. That includes keyless electronic door locks like Yale NexTouch, which combine a modern look with the durability a busy multi-family or mixed-use property needs.
Smart locks let you use a PIN code instead of a key, give temporary codes to cleaners or contractors, and stop worrying about copied keys. We also install and replace door strikers and magnetic releases, so your intercom, keypad, and lock all work together.
Intercoms, cameras, and access control all depend on good wiring. We run network cable for new systems and replace old cable when it causes problems. We install both Wi-Fi and hardwired systems, and we use PoE (Power over Ethernet) where we can, so one cable carries both power and data.
Clean, labeled cabling makes your system more reliable and much easier to repair later. We handle the wiring in apartment buildings, offices, storefronts, and private houses across the tri-state area.
We don’t push new systems when a repair will do. Here’s how we help you decide:
We’ll give you both prices when it’s a close call, so you can choose what makes sense for your budget.
We install, repair, and upgrade systems from all of the brands below, so you’re never locked into one manufacturer.
We work on private houses, office spaces, storefronts, apartment buildings, co-ops, condos, and commercial properties. Many of our customers are property managers who look after several buildings. They call us because we show up, explain the problem in plain words, and fix it.
Whether you manage a large apartment building in Queens or own a two-family house in Brooklyn, you get the same DSS technicians and the same free quote. Read what our customers say on our homepage, or learn more about DSS.
Property managers and building owners have plenty of choices in New York. Here’s why many of them have worked with DSS for years:
DSS is headquartered in Brooklyn and serves all five boroughs: Manhattan, Brooklyn, Queens, the Bronx, and Staten Island. We also work across Long Island and the rest of the tri-state area. See all of our service areas.
We know the building types here, from pre-war walk-ups with decades-old wiring to new condo buildings that want app-based entry. That local experience helps us find problems faster and recommend systems that fit how your building is actually used.
We repair and install intercoms, video intercoms, security cameras, access control systems, security locks and smart locks, and network cabling. We work on homes, apartment buildings, offices, and storefronts across NYC and Long Island.
Most single intercom repairs in NYC, like replacing one apartment unit or fixing a door release, cost about $250 to $600. Replacing a part such as an entry panel or power supply usually runs $500 to $1,500, and a dead lobby panel with a new transformer runs about $1,200 to $2,800. These are average NYC prices. We give you a free quote after we inspect your system.
Call us as soon as the problem starts. We treat a broken intercom or door release as urgent because tenants can’t get in, and we schedule a technician as quickly as we can. We carry common parts, so many repairs are finished in one visit.
Yes, in many buildings. Our Comelit video intercom works alongside your existing intercom units, so tenants keep their apartment units and can also answer the door from their cellphones.
No. Our Comelit systems are a one-time investment with no monthly payment. Property management software and call-log servers are optional and sold separately.
We work with Aiphone GT and IP series, Comelit Ultra Touch, DNAKE, Akuvox, ButterflyMX, DoorKing, Linear, Leedan, Elvox, and 2Easy systems.
Yes. We install HD and IP camera systems for private houses, apartment buildings, offices, and storefronts, with remote viewing from your phone and cloud storage options.
Yes. We can connect keypads, key fob readers, and door strikers to your intercom, so visitors call from the entry panel while tenants and staff use a code or fob.
We serve all five boroughs (Manhattan, Brooklyn, Queens, the Bronx, and Staten Island), Long Island, and the tri-state area from our office at 1541 E 46th Street, Brooklyn, NY 11234.
Yes. Many of our customers are property managers and co-op boards who look after several buildings. We handle repairs, upgrades, and new installs, and we give each building its own quote.
Yes. On Comelit video intercom installs, we offer a 3-year guarantee on Comelit material and a 1-year guarantee on service and labor. For other jobs, we explain the warranty that comes with the parts we install before we start.
Call (212) 262-2820 or send us a message with the form on this page. Your final price depends on an inspection of your wiring, entry panel, and door striker.
Yes. Douglas Security System is licensed and insured, and our technicians install and repair intercom, camera, and access control systems across NYC and Long Island.