Cisco GLC-LH-SMD= 

1000BASE-LX/LH SFP Transceiver Module, MMF/SMF, 1310nm, DOM

DESCRIPTION

The hot-swappable input/output device plugs into a Gigabit Ethernet port or slot. Optical and copper models can be used on a wide variety of Cisco products and intermixed in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX, or 1000BASE-BX10-D/U on a port-by-port basis.

Cisco GLC-SX-MMD 

1000BASE-SX SFP Transceiver Module, MMF, 850nm, DOM

DESCRIPTION
Type Multimode
* 62.5/125 µm or 50/125 µm (core/cladding) diameter, graded-index, low metal content, multimode fiber optic,
complying with ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a, respectively

BOSCH LBB1938/30 

Power amplifier 1x480W

DESCRIPTION

480 W power amplifier in a 3U high 19” housing
EN 54‑16 certified
70 V / 100 V and 8 Ohm outputs
Dual inputs with priority switching
100 V input for slave operation on 100 V speaker line

BOSCH LBB1956/00 

Call station, 6-zone

DESCRIPTION

Stylish six-zone call station for the Plena Voice Alarm System
Six zone selection keys, all-call key and momentary PTT-key for calls
Selectable gain, speech filter, limiter, and output level for improved intelligibility
LED indications for zone selection, fault, and emergency state
Call station extension provides seven additional zone and zone group keys

 BOSCH LBB1957/00

Call Station Keypad

DESCRIPTION

Seven zone selection keys
LED indications for zone selection
Up to eight keypads can be connected together