Chemglass CG-1406-E-06 150mL Filter Funnel, Buchner, 24/40 Lower Vacuum Assembly 157807142301 but there is no output

but there is no output from speaker outs and the tuning knob does not move dial

Manufacturer Avocent Model Number CBL0031 UPC 636430039756 SKU 19-65440 Ref 23-92846

Spare Battery

Manufacturer Cambridge AccuSense Model Number QuattroFLOW SKU 19-35989 Ref 23-46786

Includes Programmable Assembly as pictured

Chemglass CG-1406-E-06 150mL Filter Funnel, Buchner, 24/40 Lower Vacuum Assembly 157807142301 but there is no outputCondition Used Description Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. Includes Chemglass CG 1406 E 06 150mL Filter Funnel, Buchner, Improved, 24 40 Lower Vacuum Assembly, Medium Frit as pictured. No additional items or accessories are included. Photos are of the actual unit for sale.