Rule-Mate 1100 vs Attwood Sahara S1100

Buy the Rule-Mate RM1100B 1100 GPH, ASIN B07L3K5VMP, when you want the automatic bilge pump whose feature line prints Auto Sense Intelligence language, activates at about 2 inches of water language, a built-in thermal cut-off, threaded discharge language, and language that no separate float is needed. Buy the Attwood Sahara S1100, part 4511-7, ASIN B011KL7J2E, when you want the 1100 GPH automatic bilge pump whose feature line prints mercury-free internal float language, a 1-1/8 inch hose connection, 36 inch wire language, and a compact package story. Both cards are 1100 GPH bilge pumps. One is a Rule-Mate with Auto Sense Intelligence. The other is an Attwood Sahara with a mercury-free internal float. Match the ASIN before you match the word bilge or the number 1100.

Short version. A Rule 27SA and an Attwood Tsunami Mk2 500 are a different electronic-sensing and 500 GPH pair on the same shelf family. A Rule 800 and an Attwood Tsunami T800 are another pump pair with a different GPH story. A Rule 35A and an Attwood 4202-7 are float switches, not these pump bodies. An Attwood 4505-7 and a SEAFLO are another bilge pair. An HX890 and an M37 are handheld VHF radios. B07L3K5VMP and B011KL7J2E are the two 1100 GPH bilge pump cards here.

Rule-Mate RM1100B 1100 GPH is ASIN B07L3K5VMP. Attwood Sahara S1100 4511-7 is ASIN B011KL7J2E. A float switch, a fresh-water pump, and a VHF radio are different cards.

Who should buy the Rule-Mate RM1100B, and who should buy the Attwood Sahara S1100?

Buy B07L3K5VMP if you want the Rule-Mate RM1100B 1100 GPH whose feature line prints Auto Sense Intelligence language, activates at about 2 inches of water language, a built-in thermal cut-off, threaded discharge language, and language that no separate float is needed. Buy it when Auto Sense Intelligence is the install story you opened, when 1100 GPH is the flow class you named, and when you will keep RM1100B attached to that ASIN instead of shopping a Rule 27SA or Rule 800 photograph alone.

Buy B011KL7J2E if you want the Attwood Sahara S1100 part 4511-7, 1100 GPH, with mercury-free internal float language, a 1-1/8 inch hose connection, 36 inch wire language, and a compact package story. Buy it when a mercury-free internal float and the Sahara compact hose-and-wire sentences are the story you opened, not a Rule-Mate Auto Sense body with threaded discharge and about-2-inch activation language.

Buy neither if you wanted a float switch sold as a separate part. The Rule 35A versus Attwood 4202-7 fight already owns that seat. Buy neither if you wanted the Rule 27SA versus Tsunami Mk2 500 pair. That is a different electronic-sensing and 500 GPH conversation. Buy neither if you wanted the Rule 800 versus Tsunami T800 pair. Buy neither if you needed a fresh-water pump for a galley or washdown. Buy neither if the radio is quiet and you thought a bilge pump would call the Coast Guard. An HX890 or M37 is the handheld VHF shelf.

What is the Rule-Mate RM1100B actually for?

This card is a Rule-Mate RM1100B automatic bilge pump rated 1100 GPH on the title, ASIN B07L3K5VMP. The Amazon feature block that travels with this part prints Auto Sense Intelligence language, activates at about 2 inches of water language, a built-in thermal cut-off, threaded discharge language, and language that no separate float is needed. Those cells belong to B07L3K5VMP. Do not paste a Rule 27SA sensing interval chart, a Rule 800 flow cell, a Rule 35A float story, or an Attwood Sahara internal-float story onto this ASIN.

Auto Sense Intelligence is the control sentence. Activates at about 2 inches of water is the water-level sentence. Built-in thermal cut-off is the motor-protection sentence. Threaded discharge is the hose-connection sentence. No separate float needed is the install claim that removes a separate Rule-A-Matic from this particular cart. It is not a claim the bilge can stay packed with oil pads that never let water reach the sensor. It is not a claim 1100 GPH will empty a cracked hose faster than you can notice. It is not mercury-free internal float language borrowed from the Sahara card.

Eleven hundred GPH is the title flow class shared in name with the Sahara S1100 and still a different control job. Wire gauge, fuse size, and a battery that can still crank the engine after an automatic weekend are the electrical half. Kill the battery switch before you cut into a bilge circuit. Route the hose with as few high loops as the boat allows. Test after install: wet the bilge pocket past the about-2-inch activation story, watch the pump take suction, confirm discharge overboard, then dry the pocket and confirm it stops. Automatic sensing is not unattended forever. A cracked fitting can still beat a small bank.

Auto Sense Intelligence and no-separate-float language are why the Rule-Mate stays in the cart when electronic sensing without a float switch part is the install filter. About 2 inches of water is the activation sentence the feature line on this card actually prints. Threaded discharge and thermal cut-off are the port and protection sentences. Those sentences are the RM1100B card. They are not permission to rename the part as an Attwood Sahara S1100 4511-7 because both titles say 1100 GPH.

Do: match B07L3K5VMP, fuse the positive near the source, and keep the sensing area clear. Don’t: treat the Rule-Mate as a float switch you still need to buy for this card’s no-separate-float language. Don’t: bury the pump under an oil pad. Don’t: ignore a pump that runs without water after the pocket is dry.

What is the Attwood Sahara S1100 actually for?

This card is an Attwood Sahara S1100 automatic bilge pump, part 4511-7, ASIN B011KL7J2E. The feature line that travels with this part prints 1100 GPH language, mercury-free internal float language, a 1-1/8 inch hose connection, 36 inch wire language, and a compact package story. Those cells belong to 4511-7 on B011KL7J2E. Do not paste a Tsunami Mk2 500 cell, a Tsunami T800 cell, or a Rule-Mate Auto Sense story onto this ASIN.

Eleven hundred GPH is the flow sentence. Mercury-free internal float is the control sentence. One and one eighth inch hose is the discharge-hose sentence. Thirty-six inch wire is the lead-length sentence. Compact package is the size sentence the feature line prints. None of those sentences is Auto Sense Intelligence language. None of them is activates-at-about-2-inches language. None of them invents a threaded-discharge cell from the Rule-Mate feature block. None of them invents a thermal cut-off cell the Sahara bullets on this card did not print.

A mercury-free internal float at 1100 GPH is an automatic pump body with the float built into the package. It is not a claim the pump is a Rule-Mate Auto Sense sensor. It is not a claim you still must buy a Rule 35A float for this Sahara card’s internal-float story. Orient the 1-1/8 inch hose before you tighten clamps. Thirty-six inch wire is the lead you got on the card, not a reason to skip a fuse. Compact package language still needs a wet pocket you can reach for service. Keep trash out of the intake. Test the same way: wet, run, discharge, dry, stop. If the boat sits on a trailer with the bow high, water may collect away from the pump. Place it for the attitude that matters when the boat is in the water.

Mercury-free internal float language is why the Sahara stays in the cart when an internal float package is the control filter. One and one eighth inch hose and 36 inch wire are the install sentences Attwood prints for 4511-7. Compact package is the size sentence. Those sentences are the Sahara S1100 card. They are not permission to paste Rule-Mate Auto Sense Intelligence and about-2-inch activation language onto B011KL7J2E because both pumps share an 1100 GPH title class.

Do: match the 1-1/8 inch hose ID and fuse the feed. Don’t: stretch a hard kink that fights the compact package claim. Don’t: treat mercury-free internal float language as a dry-run forever license. Don’t: order a Tsunami T800 or Mk2 500 because the word Attwood matched and the Sahara S1100 4511-7 cell was not checked.

How do you read these two bilge pump cards without mixing the float-switch pages?

Both technique cells are 1100 GPH automatic bilge pumps that move water. A float switch sold as a separate part will not replace either of them when the pump body already carries Auto Sense or an internal float on the card. The Rule 35A versus Attwood 4202-7 comparison elsewhere is a switch conversation. Put B07L3K5VMP or B011KL7J2E in the wet pocket if a pump body is the job. The Rule 27SA versus Tsunami Mk2 500 fight and the Rule 800 versus T800 fight own neighboring pump windows with different sensing and GPH stories. The handheld VHF articles tell you how you call after the bilge plan has already failed.

The Rule-Mate RM1100B card gives you Auto Sense Intelligence, activates at about 2 inches of water, a built-in thermal cut-off, threaded discharge, no-separate-float language, and an 1100 GPH title class. The Sahara S1100 card gives you 1100 GPH, mercury-free internal float language, a 1-1/8 inch hose connection, 36 inch wire language, and a compact package story. Those are the sentences this comparison will treat as belonging to these parts. A reviewer who timed a dry bilge to a different fuse is a reviewer. The feature still says what it says.

Eleven hundred GPH appears on both titles. It is not permission to treat Auto Sense Intelligence and a mercury-free internal float as identical control hardware. About 2 inches of water activation is not a 1-1/8 inch hose cell. Threaded discharge is not 36 inch wire language. Thermal cut-off is not mercury-free float language. Do not invent a float-switch ASIN for the Rule-Mate from a neighbor Rule float page when the card already prints no separate float needed. Do not invent an Auto Sense interval in minutes for the Sahara from a Rule 27SA neighbor. Do not invent a dollar figure for either listing. Use the buttons for the live cart.

What actually fails on these two cards?

The Rule-Mate RM1100B card fails when 1100 GPH is rewritten as a Rule 800 without renaming the part. It fails when Auto Sense Intelligence is sold as a Rule 35A float you still must buy for this card’s no-separate-float language. It fails when activates-at-about-2-inches language is ignored and a dirty bilge is blamed on the brand. It fails when threaded discharge language is forced onto the wrong hose ID. It fails when built-in thermal cut-off is treated as a spare pump. It fails when a Rule 27SA electronic-sensing sibling is ordered because the family name matched and the RM1100B cell was not checked. It fails when mercury-free internal float language from the Sahara card is pasted onto B07L3K5VMP.

The Sahara S1100 card fails when B011KL7J2E, a Tsunami T800, a Tsunami Mk2 500, and a different Attwood GPH are treated as one ASIN. It fails when 1100 GPH is treated as proof the control story matches the Rule-Mate Auto Sense card. It fails when mercury-free internal float language is ignored and Auto Sense Intelligence is pasted onto 4511-7. It fails when the 1-1/8 inch hose stays on the wrong ID and the clamp leaks. It fails when 36 inch wire language is used as a reason to skip a fuse. It fails when compact package language is rewritten as a sealed dry-bag claim. It fails when a float-switch ASIN is opened because both conversations mention Attwood.

The shared failure is a dirty bilge and a skipped wet test. Oil, bags, and chips jam intakes. Clean before you blame the brand. Shared 1100 GPH title language is not a shared sensor. Match Auto Sense versus mercury-free internal float before you match the number on the box.

What is this comparison not?

This is not a float-switch comparison sold as a separate part. Both cards are pumps, and the Rule 35A versus Attwood 4202-7 fight is elsewhere. This is not every Rule and every Attwood. B07L3K5VMP and B011KL7J2E / 4511-7 are the cards. A Rule 27SA, a Rule 800, a Tsunami Mk2 500, a Tsunami T800, or a SEAFLO neighbor is a different part if the ASIN changes. This is not a fresh-water pump review. This is not a handheld VHF review. This is not a price quote. The listing moves. Use the buttons if you want the live cart. Neither card prints a timed hull-empty chart for your stringers. The job is a boat bilge, not a house sump.

So which bilge pump should you buy?

Buy the Rule-Mate if you want ASIN B07L3K5VMP, the RM1100B 1100 GPH, Auto Sense Intelligence language, activates at about 2 inches of water language, a built-in thermal cut-off, threaded discharge language, and language that no separate float is needed. Buy the Attwood if you want ASIN B011KL7J2E, Sahara S1100 4511-7, 1100 GPH, mercury-free internal float language, a 1-1/8 inch hose connection, 36 inch wire language, and a compact package story. Buy neither if you wanted a separate float switch, a fresh-water pump, a VHF radio, or the Rule 27SA / Mk2 500 or Rule 800 / T800 fights the Rule-Mate and Sahara cards have already refused. Match the control story before you match the shared 1100 GPH class. Wet-test once at the dock. If the pocket never reaches the intake, the placement was wrong, not the weather.