| SK1540PQ | | part details | | DIO | | 2009 | | Avail | | 87627 |
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| PT-1540PQ | | part details | | Mallory Sonalert | | | Avail | | 4878 |
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| SK1540PQ | | part details | | Diotec | | 1008 | | Avail | | 4840 |
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| PT-1540PM-PQ | | part details | | HITPOINT | | 2025 | | Avail | | 3042 |
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| PT-1540PQ | | part details | | MALLORY SONALERT PRODUCTS | | | Avail | | 850 |
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| KEEG1540PBL-A | | part details | | KINGSTATE | | 09 | | Avail | | 707 |
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| KEEG1540PBL-A | | part details | | KINGSTATE | | | Avail | | 707 |
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| KEEG1540PBL-A | | part details | | KINGSTATE | | 2010 | | Avail | | 707 |
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| PT1540PQ | | part details | | | | Avail | | 500 |
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| PT1540P | | part details | | MALLORY SONALERT PRODUCTS | | | Avail | | 365 |
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| PT-1540P | | part details | | MALLORY | | 97 | | Avail | | 363 |
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| TX15-40P-LT-MH2 | | part details | | JAE | | | Avail | | 351 |
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