The HONEYWELL 12HM8 Action Switch is a hermetically sealed, miniature SPDT switch designed for demanding applications across aerospace, military, marine, and industrial environments. Manufactured in the US, this switch offers reliable performance in harsh conditions, including extreme temperatures, dust, water, and corrosive gases.
Product Features
Hermetically sealed with Symbol 5 seal, suitable for high and low altitude, deep space, and harsh environments
Constructed with stainless steel housing for durability and corrosion resistance
Electrical ratings up to 4 A at 28 VDC, with options for gold or silver contact materials
Available with MIL-PRF-8805 qualification and UL 508 certification for industrial and military applications
Compact, miniature package requiring minimal space on equipment
Flexible electrical connectivity via wire leads or through-hole solder posts
Wide operating temperature range from -184 °C to 260 °C (-300 °F to 500 °F)
Mechanical endurance of at least 25,000 operations
Specifications
Characteristic
Details
Description
Hermetic sealed miniature snap-action switch
Housing material
300 series stainless steel
Mechanical endurance
25,000 operations minimum
Electrical endurance
25,000 operations minimum
Dielectric voltage (initial)
1000 Vrms for 1 minute
Circuitry
SPDT
Contact material
Silver, gold, or bifurcated gold contacts
Electrical rating
Up to 4 A at 28 VDC
Sealing
Symbol 5 hermetic seal to MIL-PRF-8805
Temperature range
-65 °C to 121 °C (standard), optional -184 °C to 260 °C
Vibration
Symbol 2 (15 g), 10 to 2000 Hz
Mechanical shock
Shock type M (100 G, saw tooth)
Approvals
MIL-PRF-8805, UL 508 (File E66520)
Applications
Military and commercial aircraft: landing gear, engine fuel valves, external hatches
Marine and harsh industrial environments
Spacecraft: external hatch and door position, engine sensors
Ground support equipment and power generation
Additional Details
Part Number: 12HM8
Manufacturer: HONEYWELL
Country of Origin: US
UOM: EA
ECCN: EAR99
Package Type: Not specified
Datasheet: Download Datasheet
Datasheet was not processed please search the internet for the part number for more details.
Using this with SIM SIM8262E-M2 with Airtel 5g sim. Working seamlessly and getting download speed upto 450 mbps and upload speed upto 60 mbps. But with jio sim only 4g is working.
{"id":10024556822845,"title":"12HM8","handle":"12hm8","description":"\u003ch3\u003eHONEYWELL 12HM8 Action Switches SPDT 3A 28VDC Roller Lever Basic Switch\u003c\/h3\u003e\n\n\u003cp\u003eThe HONEYWELL 12HM8 Action Switch is a hermetically sealed, miniature SPDT switch designed for demanding applications across aerospace, military, marine, and industrial environments. Manufactured in the US, this switch offers reliable performance in harsh conditions, including extreme temperatures, dust, water, and corrosive gases.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHermetically sealed with Symbol 5 seal, suitable for high and low altitude, deep space, and harsh environments\u003c\/li\u003e\n \u003cli\u003eConstructed with stainless steel housing for durability and corrosion resistance\u003c\/li\u003e\n \u003cli\u003eElectrical ratings up to 4 A at 28 VDC, with options for gold or silver contact materials\u003c\/li\u003e\n \u003cli\u003eAvailable with MIL-PRF-8805 qualification and UL 508 certification for industrial and military applications\u003c\/li\u003e\n \u003cli\u003eCompact, miniature package requiring minimal space on equipment\u003c\/li\u003e\n \u003cli\u003eFlexible electrical connectivity via wire leads or through-hole solder posts\u003c\/li\u003e\n \u003cli\u003eWide operating temperature range from -184 °C to 260 °C (-300 °F to 500 °F)\u003c\/li\u003e\n \u003cli\u003eMechanical endurance of at least 25,000 operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDescription\u003c\/td\u003e\n \u003ctd\u003eHermetic sealed miniature snap-action switch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing material\u003c\/td\u003e\n \u003ctd\u003e300 series stainless steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric voltage (initial)\u003c\/td\u003e\n \u003ctd\u003e1000 Vrms for 1 minute\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eContact material\u003c\/td\u003e\n \u003ctd\u003eSilver, gold, or bifurcated gold contacts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical rating\u003c\/td\u003e\n \u003ctd\u003eUp to 4 A at 28 VDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSealing\u003c\/td\u003e\n \u003ctd\u003eSymbol 5 hermetic seal to MIL-PRF-8805\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature range\u003c\/td\u003e\n \u003ctd\u003e-65 °C to 121 °C (standard), optional -184 °C to 260 °C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVibration\u003c\/td\u003e\n \u003ctd\u003eSymbol 2 (15 g), 10 to 2000 Hz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical shock\u003c\/td\u003e\n \u003ctd\u003eShock type M (100 G, saw tooth)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApprovals\u003c\/td\u003e\n \u003ctd\u003eMIL-PRF-8805, UL 508 (File E66520)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMilitary and commercial aircraft: landing gear, engine fuel valves, external hatches\u003c\/li\u003e\n \u003cli\u003eMarine and harsh industrial environments\u003c\/li\u003e\n \u003cli\u003eSpacecraft: external hatch and door position, engine sensors\u003c\/li\u003e\n \u003cli\u003eGround support equipment and power generation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cp\u003ePart Number: 12HM8\u003cbr\u003e\nManufacturer: HONEYWELL\u003cbr\u003e\nCountry of Origin: US\u003cbr\u003e\nUOM: EA\u003cbr\u003e\nECCN: EAR99\u003cbr\u003e\nPackage Type: Not specified\u003cbr\u003e\nDatasheet: \u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/sps\/siot\/en-us\/products\/switches\/sealed-switches\/hm-series\/documents\/sps-siot-micro-switch-hm-hermetic-basic-product-sheet-003123-2-en-ciid-154705.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-14T08:07:01+05:30","created_at":"2025-08-14T08:07:01+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","WLDM"],"price":12765063,"price_min":12765063,"price_max":12765063,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50618612744509,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"12HM8","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"12HM8","public_title":null,"options":["Default Title"],"price":12765063,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"12HM8","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/11912847.jpg?v=1755139023"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11912847.jpg?v=1755139023","options":["Title"],"media":[{"alt":null,"id":45829952143677,"position":1,"preview_image":{"aspect_ratio":1.271,"height":472,"width":600,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11912847.jpg?v=1755139023"},"aspect_ratio":1.271,"height":472,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11912847.jpg?v=1755139023","width":600}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHONEYWELL 12HM8 Action Switches SPDT 3A 28VDC Roller Lever Basic Switch\u003c\/h3\u003e\n\n\u003cp\u003eThe HONEYWELL 12HM8 Action Switch is a hermetically sealed, miniature SPDT switch designed for demanding applications across aerospace, military, marine, and industrial environments. Manufactured in the US, this switch offers reliable performance in harsh conditions, including extreme temperatures, dust, water, and corrosive gases.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHermetically sealed with Symbol 5 seal, suitable for high and low altitude, deep space, and harsh environments\u003c\/li\u003e\n \u003cli\u003eConstructed with stainless steel housing for durability and corrosion resistance\u003c\/li\u003e\n \u003cli\u003eElectrical ratings up to 4 A at 28 VDC, with options for gold or silver contact materials\u003c\/li\u003e\n \u003cli\u003eAvailable with MIL-PRF-8805 qualification and UL 508 certification for industrial and military applications\u003c\/li\u003e\n \u003cli\u003eCompact, miniature package requiring minimal space on equipment\u003c\/li\u003e\n \u003cli\u003eFlexible electrical connectivity via wire leads or through-hole solder posts\u003c\/li\u003e\n \u003cli\u003eWide operating temperature range from -184 °C to 260 °C (-300 °F to 500 °F)\u003c\/li\u003e\n \u003cli\u003eMechanical endurance of at least 25,000 operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDescription\u003c\/td\u003e\n \u003ctd\u003eHermetic sealed miniature snap-action switch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing material\u003c\/td\u003e\n \u003ctd\u003e300 series stainless steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric voltage (initial)\u003c\/td\u003e\n \u003ctd\u003e1000 Vrms for 1 minute\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eContact material\u003c\/td\u003e\n \u003ctd\u003eSilver, gold, or bifurcated gold contacts\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical rating\u003c\/td\u003e\n \u003ctd\u003eUp to 4 A at 28 VDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSealing\u003c\/td\u003e\n \u003ctd\u003eSymbol 5 hermetic seal to MIL-PRF-8805\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature range\u003c\/td\u003e\n \u003ctd\u003e-65 °C to 121 °C (standard), optional -184 °C to 260 °C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVibration\u003c\/td\u003e\n \u003ctd\u003eSymbol 2 (15 g), 10 to 2000 Hz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical shock\u003c\/td\u003e\n \u003ctd\u003eShock type M (100 G, saw tooth)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApprovals\u003c\/td\u003e\n \u003ctd\u003eMIL-PRF-8805, UL 508 (File E66520)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMilitary and commercial aircraft: landing gear, engine fuel valves, external hatches\u003c\/li\u003e\n \u003cli\u003eMarine and harsh industrial environments\u003c\/li\u003e\n \u003cli\u003eSpacecraft: external hatch and door position, engine sensors\u003c\/li\u003e\n \u003cli\u003eGround support equipment and power generation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cp\u003ePart Number: 12HM8\u003cbr\u003e\nManufacturer: HONEYWELL\u003cbr\u003e\nCountry of Origin: US\u003cbr\u003e\nUOM: EA\u003cbr\u003e\nECCN: EAR99\u003cbr\u003e\nPackage Type: Not specified\u003cbr\u003e\nDatasheet: \u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/sps\/siot\/en-us\/products\/switches\/sealed-switches\/hm-series\/documents\/sps-siot-micro-switch-hm-hermetic-basic-product-sheet-003123-2-en-ciid-154705.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
