Picture of LCN

SKU: 7949ES

LCN 7949ES Auxiliary Blow-Open Control Box with Electric Strike Relay

lcn 7949es blow-open control box with strike relay

LCN

SKU: 7949ES

LCN 7949ES Auxiliary Blow-Open Control Box with Electric Strike Relay

In stock

The LCN 7949ES is a genuine OEM pneumatic control box designed for commercial door control systems. It combines auxiliary blow-open functionality with an electric strike relay for coordinated door release and opening.

The LCN 7949ES is an auxiliary pneumatic blow-open control box designed to unlock and open doors during smoke evacuation operations. It combines the blow-open functionality of the LCN 7949 control box with an electric strike relay, providing coordinated door release and opening when activated by a smoke evacuation system.

We are your trusted source for genuine OEM replacement parts, commercial door hardware, electronic access control products, and life safety hardware.

Manufacturer: LCN
Part Number: 7949ES
Product Name: Auxiliary Blow-Open Control Box with Electric Strike Relay
Control Type: Pneumatic
Relay Type: Isolated DPDT relay contacts
Relay Assembly: 3390C
Electrical Input: 120 VAC
Current Draw: 0.12 Amps
Power Consumption: 14.4 Watts
Air Supply: 80–100 PSI, clean and dry compressed air.
Primary Function: Auxiliary pneumatic blow-open operation and electric strike release control
Application: Commercial door control systems requiring coordinated unlocking and pneumatic door opening during smoke evacuation
OEM Part: Yes

Warranty

  • LCN mechanical door closers offer 15–30-year warranties, while electromechanical products generally carry two years.

Compatibility

  • LCN 7901ES Series Control Box
  • LCN 7902ES Series Control Box
  • LCN Pneumatic Auto-Equalizers
     

Includes

  • LCN 7949ES Blow-Open Control Box
  • LCN 3390C Electric Strike Relay Assembly
 
$3,746.00
$2,622.20
minus minus

Catalogs

Frequently Asked Questions

What is the LCN 7949ES?
The LCN 7949ES is an auxiliary pneumatic blow-open control box with an integrated electric strike relay for coordinated door unlocking and opening.
What does the LCN 7949ES do?
It overrides normal door control operation during a smoke evacuation event, allowing connected pneumatic Auto-Equalizers to open the doors.
What is the purpose of the electric strike relay?
The electric strike relay controls the release of an electronic strike or compatible latching device during a power interruption or alarm condition.
What happens to the electric strike during a smoke evacuation event?
The relay contacts open during a power interruption or alarm condition, releasing the connected electric strike.
Is the LCN 7949ES a complete control box or an individual replacement part?
The LCN 7949ES is a complete auxiliary blow-open control box assembly with an electric strike relay.

LCN 7949ES pneumatic blow-open control box with electric strike relay unlocks and opens doors during smoke evacuation for coordinated door release.

LCN 7949ES pneumatic blow-open control box with electric strike relay unlocks and opens doors during smoke evacuation for coordinated door release.

LCN 7949ES pneumatic blow-open control box with electric strike relay unlocks and opens doors during smoke evacuation for coordinated door release.