# Window/Door Detector Transmitter,304 MHz

**Manufacturer:** Linear  
**MPN:** `T-90D`

The Linear T-90D Supervised Door/Window Transmitter features external contact terminals with installer-selected external contact mode. It includes a plastic mounting shoe with tamper lock and is powered by 2032 two lithium batteries. Optional 2450 lithium batteries can be used for extended life. The transmitter operates on a 303.875 MHz RF frequency and supports the Linear SX radio format.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Linear |
| Manufacturer name | Linear |
| Manufacturer | Linear |
| CategoryId | 6237 |
| CategoryIdL1 | 14 |
| CategoryIdL2 | 14 |
| CategoryIdL3 | 4457 |
| CategoryIdL4 | 6237 |
| CategoryL1 | Safety |
| CategoryL2 | Facility & Worksite Safety |
| CategoryL3 | Fire Protection |
| CategoryL4 | Carbon Monoxide and Smoke Detectors |
| DimensionUnit | inch |
| GraingerSku | 45NK78 |
| Extra Product Name | Window/Door Detector Transmitter,304 MHz |
| UPC | None |
| UnitOfMeasure | EA |
| Weight | 0.25, 0.3 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | CN |
| extendedLead | 8 |
| extendedQty | -2 |
| height | 3.3 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 0.88 |
| moq | 1 |
| MPN | T-90D |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | Drop Ship |
| SKU | G2439468 |
| tierMinQty1 | 1 |
| tierPrice1 | 68.67 |
| url | https://www.zoro.com/linear-windowdoor-detector-transmitter-304-mhz-t-90d/i/G2439468/ |
| width | 1.5 |
| Part Number | T-90D |
| Model | T-90D |
| Product Group | BISS |
| Height | 3.3 in, 0.1, 0.88, 375, 56 |
| Width | 1.5 in, 0.1, 0.88, 500, 75 |
| Depth | 0.9 in |
| Promotion Restriction | Not eligible for promotion |
| Item | Window and Door Detector Transmitter |
| Operating Frequency | 304.000 MHz |
| Compatible With | SX Format |
| Powered By | (2) CR2032 Batteries |
| Battery Life | 5 yr |
| Includes | Tamper Switch |
| For Use With | SX Format |
| Features | Compact/Attractive Style |
| Product Type | Window and Door Detector Transmitter |
| ASIN | B014W4QM4M |
| AdultProduct | False |
| Amount | 86.11 |
| Asin | B014W4QM4M |
| Aspect | exception, proper_shipping_name, regulatory_packing_group, transportation_regulatory_class, united_nations_regulatory_id |
| Autographed | False |
| Batteries_required | False |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G2439468 | 68.67 | 1 | None | 1 |
| AmazonSC | B014W4QM4M |  |  | None | 1 |
| absupply.net | LINEAR T-90D | 98.48 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/244000000/244205500/part_--T90D---Linear--8052ded4c5.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp