what is difference between rx and lx

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The RX monitors the push bar while the LX monitors the latch bolt of the exit device. A SS device has an LX and a key cylinder switch plus an emergency push bar signage.
The RX-LC and LX-LC (Low Current) switches are used for current up to 0.05 amps at 24 VDC and the standard RX and LX switches are used for current greater than 0.05 amps up to 0.5 amps at 24 VDC.
Device: Pushbar end caps, pushbar trim and center case cover. Trim: Lever assembly, trim plate assembly (trim plate and bushing sleeve).Bronze Finish Comparison
LR is the regular/ standard latch and PL is Pullman/ES (Electric Strike) latch for the Von Duprin 8827 exit device.
 ES (electric strike) latch is only used with the 8827 less bottom rod on a non fire rated exit device with a 6111 electric strike.
Panic Hardware and Fire Exit Hardware are two different types of exit devices, and the proper selection is determined by code requirements. Panic Hardware is an exit device which is tested for u...
The most obvious difference (in the device) is the lack of mechanical dogging on a Fire Rated Device.  There are some internal parts that may be different and the method it is secured to the d...
The hole should be drilled in the field once the end cap is located on the door.  It is a 5/8" hole, that is located 5/16" from the end of the mechanism case. See installation instruction of t...
PN33/35/98/99 Pneumatic exit devices are not usually used with RX or LX switches since the Pneumatic PN device is used instead EL to eliminate the electric from the device.
The attached table shows the part numbers for LX-RX and LX-RX-LC switches field installed.
The Von Duprin RXLX combination switch must be ordered together as one assembly. Existing RX or LX switch must be removed to install the combination RX LX switch. Make sure correct RX LX combinatio...