JUNSON JS-DM401 Dome Emergency Exit Push Button Stainless Steel 12V DC NO NC 18x32.5mm Slim

JUNSON JS-DM401 Dome Emergency Exit Push Button

The JS-DM401 is a slim-profile request-to-exit push button engineered for narrow aluminium and steel door frames where a standard 86 x 86 mm plate cannot be installed. A domed stainless steel actuator gives a positive, tactile press, while the NO / NC / COM dry contact interfaces directly with magnetic locks, electric strikes and access controllers.

Technical Specifications

Design Highlights

• Narrow-frame footprint: an 18.0 x 32.5 mm plate slips onto slim hollow-metal and aluminium profiles that reject full-size exit buttons.
• Domed steel actuator: the raised dome centres the thumb and stays easy to hit with a forearm, elbow or trolley push.
• Three-wire flexibility: NO / NC / COM terminal block lets one stock item serve fail-safe and fail-secure circuits.
• 2 mm stainless faceplate: sandblasted surface resists scratching and fingerprint marking in high-traffic lobbies.
• Long service interval: 500,000-press mechanical rating and a plated copper contact block keep maintenance low.
• Green silkscreen legend: clear bilingual-friendly exit marking; custom legends, colours and logos can be printed on request.

Wiring Reference

Connect COM to the controller common terminal, NC in series with the lock power loop for fail-safe magnetic locks, and NO to the request-to-exit input. Use 0.5-1.0 mm² stranded cable and keep the run under 100 m for reliable signalling.

FAQ

Q1. Will the JS-DM401 fit a narrow aluminium storefront frame?
A1. Yes. The plate measures only 18.0 x 32.5 mm and projects 25.2 mm, so it mounts on mullions and slim profiles where an 86 x 86 mm button will not sit.

Q2. Can it release a magnetic lock directly?
A2. It switches a dry contact rather than the lock current. Wire NC into the lock supply loop to cut power when pressed, or route NO into the access controller input for logged egress.

Q3. Is a separate power supply required?
A3. No. The 12 V DC rating refers to the contact load; the button is a passive switch and draws no standby current.

Q4. What are the MOQ and lead time for customised versions?
A4. Standard green-legended units ship from 50 pcs in 2-7 working days. Custom legend colour, laser logo or a different plate finish starts at 200 pcs with roughly 10-15 working days of production.

Q5. How is the button protected for outdoor or humid areas?
A5. The standard build suits indoor and covered installations with 0-95% RH. For wash-down or exposed outdoor doors ask for the sealed gasket option before ordering.

Q6. What warranty applies?
A6. Every JS-DM401 carries a 3-year warranty against manufacturing defects; damage from incorrect wiring or physical abuse is excluded and quoted for repair separately.

About JUNSON

JUNSON designs and builds electric locking hardware for access control projects, supplying magnetic locks, electric strikes, electric bolts, exit buttons and door holders to distributors, integrators and OEM partners. Our production line covers stainless steel stamping, sandblasting, coil winding and 100% functional testing before packing, which is why the same platform is delivered under JUNSON and private-label programmes. Engineering support, drawing customisation and mixed-container consolidation are available for project orders.

Quality Commitment

Each unit is press-tested and contact-checked before cartoning. JUNSON honours a 3-year warranty on related products when failure is not caused by human damage; out-of-warranty repairs are quoted separately. Browse our service centre for return procedures.

Related products we manufacture: magnetic door lock, electric deadbolt lock, electric strike, electric bolt lock, electronic cabinet lock and access control accessories.