The T-1 Carbon microphone was originally designed as an electrical, mechanical and acoustical equivalent of Western Electric's model T-1. The handset is constructed of durable ABS plastic combined with a high strength stainless cord and steel internal lanyard for durability and security.

Each handset consist of the following elements:
- Handset type: SD-45150H20 Standard Receiver and  Carbon Type 1 Transmitter.
- Handset handle and cap material: ABS Plastic
- Wiring: Four 24 gauge Teflon insulated wires (2 for receiver, 2 for transmitter) with single modular plug (Optional 4 spade conductors)

Armored Cord Assembly.:
- 304 Stainless Steel, Interlock style. Inside Diameter, 0.250", 6.350mm. Outside Diameter, 0.329", 8.357mm.

-Linear Pull Test Load, 1000 lbs., 454 kg
- Includes steel lanyard which is anchored to handset handle. Steel lanyard has a pull test load of approx. 550 lbs, 250 kgs.
- Other Components: lanyard block retainer; anti-rotation wedge; transmitter holder; blue rubber grommet to seal handset/cord connection

SD-45150H20 Standard Receiver:
- DC Resistance at 20 degrees C : 145 ± 15 ohm
- Frequency Response Range: 300-3400 Hz
- Sensitivity: 100 ± 2 dB at 60mv
- Impedance: 150 ± 30 ohm at 1 KHz

Carbon Type 1 Transmitter:
- Type : Carbon Type 1
-Diameter: 1.814  Height: .540
-Weight Grams: 33 ± 2
-Sensitivity (DBv) -22 ± 4
-Impedance (Ω):   65 ± 30
- Aluminum Vandal Resistant Grid
- Screw terminal

Custom colors, cord lengths, microphones and wire terminal/plugs are available depending on details and volume. Call 1-800-884-4835 or fill out the contact us form to inquire about custom handsets or volume quotes. 

Handset caps are sealed with high-strength epoxy adhesive prior to shipping, unless otherwise requested.

Master Case Qty: 30 pcs

 4-pin modular connectors are supplied with most handsets at no additional cost, while supplies last.  Certain handset variants which require modular connectors may require an upcharge.